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Finding the Fourth Proportional to 572,753.28, 790,385.76 and 318,102.24

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Solution

The fourth proportional to 572,753.28, 790,385.76 and 318,102.24 is: 438,973.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,753.28 : 790,385.76 = 318,102.24 : x
  2. Step 2: Convert to fraction form
    572,753.28/790,385.76 = 318,102.24/x
  3. Step 3: Cross multiply
    572,753.28x = 790,385.76 × 318,102.24
  4. Step 4: Simplify right side
    572,753.28x = 251,423,480,720.10
  5. Step 5: Solve for x
    x = 251,423,480,720.10/572,753.28
  6. Step 6: Final answer
    x = 438,973.45

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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.