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Finding the Fourth Proportional to 538,148.97, 742,497.84 and 374,622.30

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Solution

The fourth proportional to 538,148.97, 742,497.84 and 374,622.30 is: 516,875.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,148.97 : 742,497.84 = 374,622.30 : x
  2. Step 2: Convert to fraction form
    538,148.97/742,497.84 = 374,622.30/x
  3. Step 3: Cross multiply
    538,148.97x = 742,497.84 × 374,622.30
  4. Step 4: Simplify right side
    538,148.97x = 278,156,248,565.83
  5. Step 5: Solve for x
    x = 278,156,248,565.83/538,148.97
  6. Step 6: Final answer
    x = 516,875.93

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Double scale
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Similar ratio
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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.