Home / 870,840.13-1,306,757.67-338,291.86

Finding the Fourth Proportional to 870,840.13, 1,306,757.67 and 338,291.86

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Solution

The fourth proportional to 870,840.13, 1,306,757.67 and 338,291.86 is: 507,631.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,840.13 : 1,306,757.67 = 338,291.86 : x
  2. Step 2: Convert to fraction form
    870,840.13/1,306,757.67 = 338,291.86/x
  3. Step 3: Cross multiply
    870,840.13x = 1,306,757.67 × 338,291.86
  4. Step 4: Simplify right side
    870,840.13x = 442,065,482,753.57
  5. Step 5: Solve for x
    x = 442,065,482,753.57/870,840.13
  6. Step 6: Final answer
    x = 507,631.04

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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.