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Finding the Fourth Proportional to 605,591.71, 908,117.62 and 321,217.54

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Solution

The fourth proportional to 605,591.71, 908,117.62 and 321,217.54 is: 481,683.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,591.71 : 908,117.62 = 321,217.54 : x
  2. Step 2: Convert to fraction form
    605,591.71/908,117.62 = 321,217.54/x
  3. Step 3: Cross multiply
    605,591.71x = 908,117.62 × 321,217.54
  4. Step 4: Simplify right side
    605,591.71x = 291,703,304,853.72
  5. Step 5: Solve for x
    x = 291,703,304,853.72/605,591.71
  6. Step 6: Final answer
    x = 481,683.12

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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.