Home / 981,421.20-1,472,180.40-509,029.20

Finding the Fourth Proportional to 981,421.20, 1,472,180.40 and 509,029.20

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Solution

The fourth proportional to 981,421.20, 1,472,180.40 and 509,029.20 is: 763,569.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,421.20 : 1,472,180.40 = 509,029.20 : x
  2. Step 2: Convert to fraction form
    981,421.20/1,472,180.40 = 509,029.20/x
  3. Step 3: Cross multiply
    981,421.20x = 1,472,180.40 × 509,029.20
  4. Step 4: Simplify right side
    981,421.20x = 749,382,811,267.68
  5. Step 5: Solve for x
    x = 749,382,811,267.68/981,421.20
  6. Step 6: Final answer
    x = 763,569.01

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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.