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Finding the Fourth Proportional to 636,087.72, 877,806.54 and 349,614.48

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Solution

The fourth proportional to 636,087.72, 877,806.54 and 349,614.48 is: 482,471.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,087.72 : 877,806.54 = 349,614.48 : x
  2. Step 2: Convert to fraction form
    636,087.72/877,806.54 = 349,614.48/x
  3. Step 3: Cross multiply
    636,087.72x = 877,806.54 × 349,614.48
  4. Step 4: Simplify right side
    636,087.72x = 306,893,877,022.70
  5. Step 5: Solve for x
    x = 306,893,877,022.70/636,087.72
  6. Step 6: Final answer
    x = 482,471.00

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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.