Home / 981,427.20-1,472,189.40-509,035.20

Finding the Fourth Proportional to 981,427.20, 1,472,189.40 and 509,035.20

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Solution

The fourth proportional to 981,427.20, 1,472,189.40 and 509,035.20 is: 763,578.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,427.20 : 1,472,189.40 = 509,035.20 : x
  2. Step 2: Convert to fraction form
    981,427.20/1,472,189.40 = 509,035.20/x
  3. Step 3: Cross multiply
    981,427.20x = 1,472,189.40 × 509,035.20
  4. Step 4: Simplify right side
    981,427.20x = 749,396,225,666.88
  5. Step 5: Solve for x
    x = 749,396,225,666.88/981,427.20
  6. Step 6: Final answer
    x = 763,578.01

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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.