Home / 870,311.46-1,305,446.54-512,749.92

Finding the Fourth Proportional to 870,311.46, 1,305,446.54 and 512,749.92

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Solution

The fourth proportional to 870,311.46, 1,305,446.54 and 512,749.92 is: 769,112.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,311.46 : 1,305,446.54 = 512,749.92 : x
  2. Step 2: Convert to fraction form
    870,311.46/1,305,446.54 = 512,749.92/x
  3. Step 3: Cross multiply
    870,311.46x = 1,305,446.54 × 512,749.92
  4. Step 4: Simplify right side
    870,311.46x = 669,367,606,385.53
  5. Step 5: Solve for x
    x = 669,367,606,385.53/870,311.46
  6. Step 6: Final answer
    x = 769,112.71

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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.