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Finding the Fourth Proportional to 636,361.92, 878,155.83 and 349,864.92

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Solution

The fourth proportional to 636,361.92, 878,155.83 and 349,864.92 is: 482,800.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,361.92 : 878,155.83 = 349,864.92 : x
  2. Step 2: Convert to fraction form
    636,361.92/878,155.83 = 349,864.92/x
  3. Step 3: Cross multiply
    636,361.92x = 878,155.83 × 349,864.92
  4. Step 4: Simplify right side
    636,361.92x = 307,235,919,210.48
  5. Step 5: Solve for x
    x = 307,235,919,210.48/636,361.92
  6. Step 6: Final answer
    x = 482,800.60

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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.