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Finding the Fourth Proportional to 542,654.40, 748,711.44 and 316,256.16

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Solution

The fourth proportional to 542,654.40, 748,711.44 and 316,256.16 is: 436,345.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,654.40 : 748,711.44 = 316,256.16 : x
  2. Step 2: Convert to fraction form
    542,654.40/748,711.44 = 316,256.16/x
  3. Step 3: Cross multiply
    542,654.40x = 748,711.44 × 316,256.16
  4. Step 4: Simplify right side
    542,654.40x = 236,784,604,962.47
  5. Step 5: Solve for x
    x = 236,784,604,962.47/542,654.40
  6. Step 6: Final answer
    x = 436,345.13

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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.