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Finding the Fourth Proportional to 636,339.42, 878,151.30 and 345,953.82

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Solution

The fourth proportional to 636,339.42, 878,151.30 and 345,953.82 is: 477,417.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,339.42 : 878,151.30 = 345,953.82 : x
  2. Step 2: Convert to fraction form
    636,339.42/878,151.30 = 345,953.82/x
  3. Step 3: Cross multiply
    636,339.42x = 878,151.30 × 345,953.82
  4. Step 4: Simplify right side
    636,339.42x = 303,799,796,772.97
  5. Step 5: Solve for x
    x = 303,799,796,772.97/636,339.42
  6. Step 6: Final answer
    x = 477,417.85

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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.