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Finding the Fourth Proportional to 442,865.60, 664,298.40 and 413,122.40

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Solution

The fourth proportional to 442,865.60, 664,298.40 and 413,122.40 is: 619,683.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,865.60 : 664,298.40 = 413,122.40 : x
  2. Step 2: Convert to fraction form
    442,865.60/664,298.40 = 413,122.40/x
  3. Step 3: Cross multiply
    442,865.60x = 664,298.40 × 413,122.40
  4. Step 4: Simplify right side
    442,865.60x = 274,436,549,324.16
  5. Step 5: Solve for x
    x = 274,436,549,324.16/442,865.60
  6. Step 6: Final answer
    x = 619,683.60

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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.