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Finding the Fourth Proportional to 636,697.03, 878,624.66 and 361,105.43

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Solution

The fourth proportional to 636,697.03, 878,624.66 and 361,105.43 is: 498,315.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,697.03 : 878,624.66 = 361,105.43 : x
  2. Step 2: Convert to fraction form
    636,697.03/878,624.66 = 361,105.43/x
  3. Step 3: Cross multiply
    636,697.03x = 878,624.66 × 361,105.43
  4. Step 4: Simplify right side
    636,697.03x = 317,276,132,167.54
  5. Step 5: Solve for x
    x = 317,276,132,167.54/636,697.03
  6. Step 6: Final answer
    x = 498,315.71

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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.