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Finding the Fourth Proportional to 664,562.10, 997,073.55 and 290,853.30

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Solution

The fourth proportional to 664,562.10, 997,073.55 and 290,853.30 is: 436,380.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,562.10 : 997,073.55 = 290,853.30 : x
  2. Step 2: Convert to fraction form
    664,562.10/997,073.55 = 290,853.30/x
  3. Step 3: Cross multiply
    664,562.10x = 997,073.55 × 290,853.30
  4. Step 4: Simplify right side
    664,562.10x = 290,002,132,360.22
  5. Step 5: Solve for x
    x = 290,002,132,360.22/664,562.10
  6. Step 6: Final answer
    x = 436,380.79

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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.