Home / 1,438,736,927.86-1,985,505,104.19-881,712,401.86

Finding the Fourth Proportional to 1,438,736,927.86, 1,985,505,104.19 and 881,712,401.86

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Solution

The fourth proportional to 1,438,736,927.86, 1,985,505,104.19 and 881,712,401.86 is: 1,216,792,618.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,736,927.86 : 1,985,505,104.19 = 881,712,401.86 : x
  2. Step 2: Convert to fraction form
    1,438,736,927.86/1,985,505,104.19 = 881,712,401.86/x
  3. Step 3: Cross multiply
    1,438,736,927.86x = 1,985,505,104.19 × 881,712,401.86
  4. Step 4: Simplify right side
    1,438,736,927.86x = 1,750,644,474,320,654,592
  5. Step 5: Solve for x
    x = 1,750,644,474,320,654,592/1,438,736,927.86
  6. Step 6: Final answer
    x = 1,216,792,618.87

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Double scale
Find fourth proportional to 1,438,736,928.86, 1,985,505,105.57 and 881,712,402.86
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.