Home / 986,755.28-1,480,723.40-425,789.76

Finding the Fourth Proportional to 986,755.28, 1,480,723.40 and 425,789.76

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Solution

The fourth proportional to 986,755.28, 1,480,723.40 and 425,789.76 is: 638,939.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,755.28 : 1,480,723.40 = 425,789.76 : x
  2. Step 2: Convert to fraction form
    986,755.28/1,480,723.40 = 425,789.76/x
  3. Step 3: Cross multiply
    986,755.28x = 1,480,723.40 × 425,789.76
  4. Step 4: Simplify right side
    986,755.28x = 630,476,861,112.38
  5. Step 5: Solve for x
    x = 630,476,861,112.38/986,755.28
  6. Step 6: Final answer
    x = 638,939.44

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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.