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Finding the Fourth Proportional to 526,543.28, 726,398.88 and 308,641.49

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Solution

The fourth proportional to 526,543.28, 726,398.88 and 308,641.49 is: 425,789.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,543.28 : 726,398.88 = 308,641.49 : x
  2. Step 2: Convert to fraction form
    526,543.28/726,398.88 = 308,641.49/x
  3. Step 3: Cross multiply
    526,543.28x = 726,398.88 × 308,641.49
  4. Step 4: Simplify right side
    526,543.28x = 224,196,829,025.54
  5. Step 5: Solve for x
    x = 224,196,829,025.54/526,543.28
  6. Step 6: Final answer
    x = 425,789.94

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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.