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Finding the Fourth Proportional to 636,358.13, 878,177.67 and 374,724.79

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Solution

The fourth proportional to 636,358.13, 878,177.67 and 374,724.79 is: 517,122.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,358.13 : 878,177.67 = 374,724.79 : x
  2. Step 2: Convert to fraction form
    636,358.13/878,177.67 = 374,724.79/x
  3. Step 3: Cross multiply
    636,358.13x = 878,177.67 × 374,724.79
  4. Step 4: Simplify right side
    636,358.13x = 329,074,939,048.59
  5. Step 5: Solve for x
    x = 329,074,939,048.59/636,358.13
  6. Step 6: Final answer
    x = 517,122.24

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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.