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Finding the Fourth Proportional to 479,989.72, 719,974.86 and 124,995.88

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Solution

The fourth proportional to 479,989.72, 719,974.86 and 124,995.88 is: 187,491.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,989.72 : 719,974.86 = 124,995.88 : x
  2. Step 2: Convert to fraction form
    479,989.72/719,974.86 = 124,995.88/x
  3. Step 3: Cross multiply
    479,989.72x = 719,974.86 × 124,995.88
  4. Step 4: Simplify right side
    479,989.72x = 89,993,891,203.58
  5. Step 5: Solve for x
    x = 89,993,891,203.58/479,989.72
  6. Step 6: Final answer
    x = 187,491.29

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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.