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Finding the Fourth Proportional to 636,270.46, 878,070 and 349,797.76

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Solution

The fourth proportional to 636,270.46, 878,070 and 349,797.76 is: 482,730.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,270.46 : 878,070 = 349,797.76 : x
  2. Step 2: Convert to fraction form
    636,270.46/878,070 = 349,797.76/x
  3. Step 3: Cross multiply
    636,270.46x = 878,070 × 349,797.76
  4. Step 4: Simplify right side
    636,270.46x = 307,146,919,123.20
  5. Step 5: Solve for x
    x = 307,146,919,123.20/636,270.46
  6. Step 6: Final answer
    x = 482,730.13

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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.