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Finding the Fourth Proportional to 571,397.78, 788,475.92 and 316,727.30

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Solution

The fourth proportional to 571,397.78, 788,475.92 and 316,727.30 is: 437,054.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,397.78 : 788,475.92 = 316,727.30 : x
  2. Step 2: Convert to fraction form
    571,397.78/788,475.92 = 316,727.30/x
  3. Step 3: Cross multiply
    571,397.78x = 788,475.92 × 316,727.30
  4. Step 4: Simplify right side
    571,397.78x = 249,731,849,256.62
  5. Step 5: Solve for x
    x = 249,731,849,256.62/571,397.78
  6. Step 6: Final answer
    x = 437,054.29

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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.