Home / 870,874.20-1,306,393.74-338,436.30

Finding the Fourth Proportional to 870,874.20, 1,306,393.74 and 338,436.30

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Solution

The fourth proportional to 870,874.20, 1,306,393.74 and 338,436.30 is: 507,686.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,874.20 : 1,306,393.74 = 338,436.30 : x
  2. Step 2: Convert to fraction form
    870,874.20/1,306,393.74 = 338,436.30/x
  3. Step 3: Cross multiply
    870,874.20x = 1,306,393.74 × 338,436.30
  4. Step 4: Simplify right side
    870,874.20x = 442,131,063,708.76
  5. Step 5: Solve for x
    x = 442,131,063,708.76/870,874.20
  6. Step 6: Final answer
    x = 507,686.49

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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.