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Finding the Fourth Proportional to 525,209.94, 724,575.11 and 387,717.98

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Solution

The fourth proportional to 525,209.94, 724,575.11 and 387,717.98 is: 534,892.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,209.94 : 724,575.11 = 387,717.98 : x
  2. Step 2: Convert to fraction form
    525,209.94/724,575.11 = 387,717.98/x
  3. Step 3: Cross multiply
    525,209.94x = 724,575.11 × 387,717.98
  4. Step 4: Simplify right side
    525,209.94x = 280,930,792,446.01
  5. Step 5: Solve for x
    x = 280,930,792,446.01/525,209.94
  6. Step 6: Final answer
    x = 534,892.38

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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.