Home / 981,351.40-1,470,990.30-559,719.40

Finding the Fourth Proportional to 981,351.40, 1,470,990.30 and 559,719.40

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Solution

The fourth proportional to 981,351.40, 1,470,990.30 and 559,719.40 is: 838,987.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,351.40 : 1,470,990.30 = 559,719.40 : x
  2. Step 2: Convert to fraction form
    981,351.40/1,470,990.30 = 559,719.40/x
  3. Step 3: Cross multiply
    981,351.40x = 1,470,990.30 × 559,719.40
  4. Step 4: Simplify right side
    981,351.40x = 823,341,808,121.82
  5. Step 5: Solve for x
    x = 823,341,808,121.82/981,351.40
  6. Step 6: Final answer
    x = 838,987.76

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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.