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Finding the Fourth Proportional to 636,000.72, 877,696.20 and 349,548

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Solution

The fourth proportional to 636,000.72, 877,696.20 and 349,548 is: 482,384.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,000.72 : 877,696.20 = 349,548 : x
  2. Step 2: Convert to fraction form
    636,000.72/877,696.20 = 349,548/x
  3. Step 3: Cross multiply
    636,000.72x = 877,696.20 × 349,548
  4. Step 4: Simplify right side
    636,000.72x = 306,796,951,317.60
  5. Step 5: Solve for x
    x = 306,796,951,317.60/636,000.72
  6. Step 6: Final answer
    x = 482,384.60

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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.