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Finding the Fourth Proportional to 610,688.20, 915,589.43 and 410,512.09

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Solution

The fourth proportional to 610,688.20, 915,589.43 and 410,512.09 is: 615,470.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,688.20 : 915,589.43 = 410,512.09 : x
  2. Step 2: Convert to fraction form
    610,688.20/915,589.43 = 410,512.09/x
  3. Step 3: Cross multiply
    610,688.20x = 915,589.43 × 410,512.09
  4. Step 4: Simplify right side
    610,688.20x = 375,860,530,491.21
  5. Step 5: Solve for x
    x = 375,860,530,491.21/610,688.20
  6. Step 6: Final answer
    x = 615,470.43

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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.