Home / 870,815.25-1,306,236.71-331,079.76

Finding the Fourth Proportional to 870,815.25, 1,306,236.71 and 331,079.76

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Solution

The fourth proportional to 870,815.25, 1,306,236.71 and 331,079.76 is: 496,624.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,815.25 : 1,306,236.71 = 331,079.76 : x
  2. Step 2: Convert to fraction form
    870,815.25/1,306,236.71 = 331,079.76/x
  3. Step 3: Cross multiply
    870,815.25x = 1,306,236.71 × 331,079.76
  4. Step 4: Simplify right side
    870,815.25x = 432,468,537,277.69
  5. Step 5: Solve for x
    x = 432,468,537,277.69/870,815.25
  6. Step 6: Final answer
    x = 496,624.90

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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.