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Finding the Fourth Proportional to 432,710.11, 597,421.91 and 387,310.73

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Solution

The fourth proportional to 432,710.11, 597,421.91 and 387,310.73 is: 534,741.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,710.11 : 597,421.91 = 387,310.73 : x
  2. Step 2: Convert to fraction form
    432,710.11/597,421.91 = 387,310.73/x
  3. Step 3: Cross multiply
    432,710.11x = 597,421.91 × 387,310.73
  4. Step 4: Simplify right side
    432,710.11x = 231,387,914,061.26
  5. Step 5: Solve for x
    x = 231,387,914,061.26/432,710.11
  6. Step 6: Final answer
    x = 534,741.18

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Double scale
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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.