Home / 747,712.10-1,121,568.15-689,975.30

Finding the Fourth Proportional to 747,712.10, 1,121,568.15 and 689,975.30

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Solution

The fourth proportional to 747,712.10, 1,121,568.15 and 689,975.30 is: 1,034,962.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,712.10 : 1,121,568.15 = 689,975.30 : x
  2. Step 2: Convert to fraction form
    747,712.10/1,121,568.15 = 689,975.30/x
  3. Step 3: Cross multiply
    747,712.10x = 1,121,568.15 × 689,975.30
  4. Step 4: Simplify right side
    747,712.10x = 773,854,320,766.70
  5. Step 5: Solve for x
    x = 773,854,320,766.70/747,712.10
  6. Step 6: Final answer
    x = 1,034,962.95

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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.