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Finding the Fourth Proportional to 718,179.27, 991,042.88 and 395,872.71

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Solution

The fourth proportional to 718,179.27, 991,042.88 and 395,872.71 is: 546,279.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,179.27 : 991,042.88 = 395,872.71 : x
  2. Step 2: Convert to fraction form
    718,179.27/991,042.88 = 395,872.71/x
  3. Step 3: Cross multiply
    718,179.27x = 991,042.88 × 395,872.71
  4. Step 4: Simplify right side
    718,179.27x = 392,326,828,652.44
  5. Step 5: Solve for x
    x = 392,326,828,652.44/718,179.27
  6. Step 6: Final answer
    x = 546,279.80

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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.