Home / 861,994.60-1,291,242.30-487,580.20

Finding the Fourth Proportional to 861,994.60, 1,291,242.30 and 487,580.20

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Solution

The fourth proportional to 861,994.60, 1,291,242.30 and 487,580.20 is: 730,380.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,994.60 : 1,291,242.30 = 487,580.20 : x
  2. Step 2: Convert to fraction form
    861,994.60/1,291,242.30 = 487,580.20/x
  3. Step 3: Cross multiply
    861,994.60x = 1,291,242.30 × 487,580.20
  4. Step 4: Simplify right side
    861,994.60x = 629,584,178,882.46
  5. Step 5: Solve for x
    x = 629,584,178,882.46/861,994.60
  6. Step 6: Final answer
    x = 730,380.65

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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.