Home / 861,976.60-1,291,215.30-487,562.20

Finding the Fourth Proportional to 861,976.60, 1,291,215.30 and 487,562.20

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Solution

The fourth proportional to 861,976.60, 1,291,215.30 and 487,562.20 is: 730,353.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,976.60 : 1,291,215.30 = 487,562.20 : x
  2. Step 2: Convert to fraction form
    861,976.60/1,291,215.30 = 487,562.20/x
  3. Step 3: Cross multiply
    861,976.60x = 1,291,215.30 × 487,562.20
  4. Step 4: Simplify right side
    861,976.60x = 629,547,772,341.66
  5. Step 5: Solve for x
    x = 629,547,772,341.66/861,976.60
  6. Step 6: Final answer
    x = 730,353.67

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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.