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Finding the Fourth Proportional to 489,428.35, 734,057.87 and 129,604.37

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Solution

The fourth proportional to 489,428.35, 734,057.87 and 129,604.37 is: 194,384.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,428.35 : 734,057.87 = 129,604.37 : x
  2. Step 2: Convert to fraction form
    489,428.35/734,057.87 = 129,604.37/x
  3. Step 3: Cross multiply
    489,428.35x = 734,057.87 × 129,604.37
  4. Step 4: Simplify right side
    489,428.35x = 95,137,108,972.01
  5. Step 5: Solve for x
    x = 95,137,108,972.01/489,428.35
  6. Step 6: Final answer
    x = 194,384.14

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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.