Home / 864,221.27-1,296,498.76-331,700.78

Finding the Fourth Proportional to 864,221.27, 1,296,498.76 and 331,700.78

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Solution

The fourth proportional to 864,221.27, 1,296,498.76 and 331,700.78 is: 497,615.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,221.27 : 1,296,498.76 = 331,700.78 : x
  2. Step 2: Convert to fraction form
    864,221.27/1,296,498.76 = 331,700.78/x
  3. Step 3: Cross multiply
    864,221.27x = 1,296,498.76 × 331,700.78
  4. Step 4: Simplify right side
    864,221.27x = 430,049,652,373.03
  5. Step 5: Solve for x
    x = 430,049,652,373.03/864,221.27
  6. Step 6: Final answer
    x = 497,615.22

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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.