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Finding the Fourth Proportional to 489,020.70, 733,531.05 and 447,030.30

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Solution

The fourth proportional to 489,020.70, 733,531.05 and 447,030.30 is: 670,545.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,020.70 : 733,531.05 = 447,030.30 : x
  2. Step 2: Convert to fraction form
    489,020.70/733,531.05 = 447,030.30/x
  3. Step 3: Cross multiply
    489,020.70x = 733,531.05 × 447,030.30
  4. Step 4: Simplify right side
    489,020.70x = 327,910,605,340.82
  5. Step 5: Solve for x
    x = 327,910,605,340.82/489,020.70
  6. Step 6: Final answer
    x = 670,545.45

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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.