Home / 805,221.60-1,207,984.80-265,508.88

Finding the Fourth Proportional to 805,221.60, 1,207,984.80 and 265,508.88

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Solution

The fourth proportional to 805,221.60, 1,207,984.80 and 265,508.88 is: 398,313.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,221.60 : 1,207,984.80 = 265,508.88 : x
  2. Step 2: Convert to fraction form
    805,221.60/1,207,984.80 = 265,508.88/x
  3. Step 3: Cross multiply
    805,221.60x = 1,207,984.80 × 265,508.88
  4. Step 4: Simplify right side
    805,221.60x = 320,730,691,305.02
  5. Step 5: Solve for x
    x = 320,730,691,305.02/805,221.60
  6. Step 6: Final answer
    x = 398,313.57

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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.