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Finding the Fourth Proportional to 900,063.48, 1,350,757.80 and 426,747

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Solution

The fourth proportional to 900,063.48, 1,350,757.80 and 426,747 is: 640,434.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,063.48 : 1,350,757.80 = 426,747 : x
  2. Step 2: Convert to fraction form
    900,063.48/1,350,757.80 = 426,747/x
  3. Step 3: Cross multiply
    900,063.48x = 1,350,757.80 × 426,747
  4. Step 4: Simplify right side
    900,063.48x = 576,431,838,876.60
  5. Step 5: Solve for x
    x = 576,431,838,876.60/900,063.48
  6. Step 6: Final answer
    x = 640,434.65

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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.