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Finding the Fourth Proportional to 489,371.40, 734,057.10 and 414,721.80

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Solution

The fourth proportional to 489,371.40, 734,057.10 and 414,721.80 is: 622,082.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,371.40 : 734,057.10 = 414,721.80 : x
  2. Step 2: Convert to fraction form
    489,371.40/734,057.10 = 414,721.80/x
  3. Step 3: Cross multiply
    489,371.40x = 734,057.10 × 414,721.80
  4. Step 4: Simplify right side
    489,371.40x = 304,429,481,814.78
  5. Step 5: Solve for x
    x = 304,429,481,814.78/489,371.40
  6. Step 6: Final answer
    x = 622,082.70

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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.