Home / 1,220,921,995.20-1,831,382,992.80-756,017,408.40

Finding the Fourth Proportional to 1,220,921,995.20, 1,831,382,992.80 and 756,017,408.40

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Solution

The fourth proportional to 1,220,921,995.20, 1,831,382,992.80 and 756,017,408.40 is: 1,134,026,112.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,921,995.20 : 1,831,382,992.80 = 756,017,408.40 : x
  2. Step 2: Convert to fraction form
    1,220,921,995.20/1,831,382,992.80 = 756,017,408.40/x
  3. Step 3: Cross multiply
    1,220,921,995.20x = 1,831,382,992.80 × 756,017,408.40
  4. Step 4: Simplify right side
    1,220,921,995.20x = 1,384,557,424,004,491,776
  5. Step 5: Solve for x
    x = 1,384,557,424,004,491,776/1,220,921,995.20
  6. Step 6: Final answer
    x = 1,134,026,112.60

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Double scale
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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.