Home / 1,191,488,014.40-1,787,232,021.60-824,155,995.20

Finding the Fourth Proportional to 1,191,488,014.40, 1,787,232,021.60 and 824,155,995.20

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Solution

The fourth proportional to 1,191,488,014.40, 1,787,232,021.60 and 824,155,995.20 is: 1,236,233,992.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191,488,014.40 : 1,787,232,021.60 = 824,155,995.20 : x
  2. Step 2: Convert to fraction form
    1,191,488,014.40/1,787,232,021.60 = 824,155,995.20/x
  3. Step 3: Cross multiply
    1,191,488,014.40x = 1,787,232,021.60 × 824,155,995.20
  4. Step 4: Simplify right side
    1,191,488,014.40x = 1,472,957,985,415,055,872
  5. Step 5: Solve for x
    x = 1,472,957,985,415,055,872/1,191,488,014.40
  6. Step 6: Final answer
    x = 1,236,233,992.80

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Half scale
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Double scale
Find fourth proportional to 1,191,488,015.40, 1,787,232,023.10 and 824,155,996.20
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.