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Finding the Fourth Proportional to 702,711.57, 969,744.15 and 380,420.91

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Solution

The fourth proportional to 702,711.57, 969,744.15 and 380,420.91 is: 524,982.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,711.57 : 969,744.15 = 380,420.91 : x
  2. Step 2: Convert to fraction form
    702,711.57/969,744.15 = 380,420.91/x
  3. Step 3: Cross multiply
    702,711.57x = 969,744.15 × 380,420.91
  4. Step 4: Simplify right side
    702,711.57x = 368,910,952,010.18
  5. Step 5: Solve for x
    x = 368,910,952,010.18/702,711.57
  6. Step 6: Final answer
    x = 524,982.04

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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.