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Finding the Fourth Proportional to 636,982.71, 879,060.39 and 365,103.09

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Solution

The fourth proportional to 636,982.71, 879,060.39 and 365,103.09 is: 503,856.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,982.71 : 879,060.39 = 365,103.09 : x
  2. Step 2: Convert to fraction form
    636,982.71/879,060.39 = 365,103.09/x
  3. Step 3: Cross multiply
    636,982.71x = 879,060.39 × 365,103.09
  4. Step 4: Simplify right side
    636,982.71x = 320,947,664,685.61
  5. Step 5: Solve for x
    x = 320,947,664,685.61/636,982.71
  6. Step 6: Final answer
    x = 503,856.16

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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.