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Finding the Fourth Proportional to 664,562.60, 997,074.30 and 290,853.80

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Solution

The fourth proportional to 664,562.60, 997,074.30 and 290,853.80 is: 436,381.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,562.60 : 997,074.30 = 290,853.80 : x
  2. Step 2: Convert to fraction form
    664,562.60/997,074.30 = 290,853.80/x
  3. Step 3: Cross multiply
    664,562.60x = 997,074.30 × 290,853.80
  4. Step 4: Simplify right side
    664,562.60x = 290,002,849,037.34
  5. Step 5: Solve for x
    x = 290,002,849,037.34/664,562.60
  6. Step 6: Final answer
    x = 436,381.54

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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.