Home / 1,294,165.28-1,785,949.80-721,192.88

Finding the Fourth Proportional to 1,294,165.28, 1,785,949.80 and 721,192.88

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Solution

The fourth proportional to 1,294,165.28, 1,785,949.80 and 721,192.88 is: 995,247.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,294,165.28 : 1,785,949.80 = 721,192.88 : x
  2. Step 2: Convert to fraction form
    1,294,165.28/1,785,949.80 = 721,192.88/x
  3. Step 3: Cross multiply
    1,294,165.28x = 1,785,949.80 × 721,192.88
  4. Step 4: Simplify right side
    1,294,165.28x = 1,288,014,279,797.42
  5. Step 5: Solve for x
    x = 1,288,014,279,797.42/1,294,165.28
  6. Step 6: Final answer
    x = 995,247.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.