Home / 1,127,728.40-1,691,330.80-672,446.76

Finding the Fourth Proportional to 1,127,728.40, 1,691,330.80 and 672,446.76

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Solution

The fourth proportional to 1,127,728.40, 1,691,330.80 and 672,446.76 is: 1,008,514.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,127,728.40 : 1,691,330.80 = 672,446.76 : x
  2. Step 2: Convert to fraction form
    1,127,728.40/1,691,330.80 = 672,446.76/x
  3. Step 3: Cross multiply
    1,127,728.40x = 1,691,330.80 × 672,446.76
  4. Step 4: Simplify right side
    1,127,728.40x = 1,137,329,921,190.43
  5. Step 5: Solve for x
    x = 1,137,329,921,190.43/1,127,728.40
  6. Step 6: Final answer
    x = 1,008,514.04

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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.