Home / 870,810.60-1,306,139.10-239,668.20

Finding the Fourth Proportional to 870,810.60, 1,306,139.10 and 239,668.20

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Solution

The fourth proportional to 870,810.60, 1,306,139.10 and 239,668.20 is: 359,481.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,810.60 : 1,306,139.10 = 239,668.20 : x
  2. Step 2: Convert to fraction form
    870,810.60/1,306,139.10 = 239,668.20/x
  3. Step 3: Cross multiply
    870,810.60x = 1,306,139.10 × 239,668.20
  4. Step 4: Simplify right side
    870,810.60x = 313,040,007,046.62
  5. Step 5: Solve for x
    x = 313,040,007,046.62/870,810.60
  6. Step 6: Final answer
    x = 359,481.16

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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.