Home / 981,710.30-1,471,701.45-665,140.70

Finding the Fourth Proportional to 981,710.30, 1,471,701.45 and 665,140.70

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Solution

The fourth proportional to 981,710.30, 1,471,701.45 and 665,140.70 is: 997,125.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,710.30 : 1,471,701.45 = 665,140.70 : x
  2. Step 2: Convert to fraction form
    981,710.30/1,471,701.45 = 665,140.70/x
  3. Step 3: Cross multiply
    981,710.30x = 1,471,701.45 × 665,140.70
  4. Step 4: Simplify right side
    981,710.30x = 978,888,532,644.02
  5. Step 5: Solve for x
    x = 978,888,532,644.02/981,710.30
  6. Step 6: Final answer
    x = 997,125.66

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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.