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Finding the Fourth Proportional to 658,920.87, 988,505.04 and 299,116.98

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Solution

The fourth proportional to 658,920.87, 988,505.04 and 299,116.98 is: 448,731.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,920.87 : 988,505.04 = 299,116.98 : x
  2. Step 2: Convert to fraction form
    658,920.87/988,505.04 = 299,116.98/x
  3. Step 3: Cross multiply
    658,920.87x = 988,505.04 × 299,116.98
  4. Step 4: Simplify right side
    658,920.87x = 295,678,642,279.58
  5. Step 5: Solve for x
    x = 295,678,642,279.58/658,920.87
  6. Step 6: Final answer
    x = 448,731.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.