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Finding the Fourth Proportional to 737,490.80, 1,105,458.60 and 421,266.80

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Solution

The fourth proportional to 737,490.80, 1,105,458.60 and 421,266.80 is: 631,456.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    737,490.80 : 1,105,458.60 = 421,266.80 : x
  2. Step 2: Convert to fraction form
    737,490.80/1,105,458.60 = 421,266.80/x
  3. Step 3: Cross multiply
    737,490.80x = 1,105,458.60 × 421,266.80
  4. Step 4: Simplify right side
    737,490.80x = 465,693,006,954.48
  5. Step 5: Solve for x
    x = 465,693,006,954.48/737,490.80
  6. Step 6: Final answer
    x = 631,456.02

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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.