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Finding the Fourth Proportional to 472,314.20, 709,853.70 and 411,488.60

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Solution

The fourth proportional to 472,314.20, 709,853.70 and 411,488.60 is: 618,437.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,314.20 : 709,853.70 = 411,488.60 : x
  2. Step 2: Convert to fraction form
    472,314.20/709,853.70 = 411,488.60/x
  3. Step 3: Cross multiply
    472,314.20x = 709,853.70 × 411,488.60
  4. Step 4: Simplify right side
    472,314.20x = 292,096,705,217.82
  5. Step 5: Solve for x
    x = 292,096,705,217.82/472,314.20
  6. Step 6: Final answer
    x = 618,437.27

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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.