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Finding the Fourth Proportional to 636,637.20, 878,264.80 and 381,545.52

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Solution

The fourth proportional to 636,637.20, 878,264.80 and 381,545.52 is: 526,356.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,637.20 : 878,264.80 = 381,545.52 : x
  2. Step 2: Convert to fraction form
    636,637.20/878,264.80 = 381,545.52/x
  3. Step 3: Cross multiply
    636,637.20x = 878,264.80 × 381,545.52
  4. Step 4: Simplify right side
    636,637.20x = 335,097,999,813.70
  5. Step 5: Solve for x
    x = 335,097,999,813.70/636,637.20
  6. Step 6: Final answer
    x = 526,356.30

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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.