Home / 664,722.20-996,968.10-243,781.40

Finding the Fourth Proportional to 664,722.20, 996,968.10 and 243,781.40

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Solution

The fourth proportional to 664,722.20, 996,968.10 and 243,781.40 is: 365,629.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,722.20 : 996,968.10 = 243,781.40 : x
  2. Step 2: Convert to fraction form
    664,722.20/996,968.10 = 243,781.40/x
  3. Step 3: Cross multiply
    664,722.20x = 996,968.10 × 243,781.40
  4. Step 4: Simplify right side
    664,722.20x = 243,042,279,173.34
  5. Step 5: Solve for x
    x = 243,042,279,173.34/664,722.20
  6. Step 6: Final answer
    x = 365,629.85

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1.5x scale

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.