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Finding the Fourth Proportional to 636,734.43, 878,678.87 and 350,248.41

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Solution

The fourth proportional to 636,734.43, 878,678.87 and 350,248.41 is: 483,334.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,734.43 : 878,678.87 = 350,248.41 : x
  2. Step 2: Convert to fraction form
    636,734.43/878,678.87 = 350,248.41/x
  3. Step 3: Cross multiply
    636,734.43x = 878,678.87 × 350,248.41
  4. Step 4: Simplify right side
    636,734.43x = 307,755,875,366.86
  5. Step 5: Solve for x
    x = 307,755,875,366.86/636,734.43
  6. Step 6: Final answer
    x = 483,334.75

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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.