Home / 981,172.38-1,471,758.58-307,306.40

Finding the Fourth Proportional to 981,172.38, 1,471,758.58 and 307,306.40

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Solution

The fourth proportional to 981,172.38, 1,471,758.58 and 307,306.40 is: 460,959.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,172.38 : 1,471,758.58 = 307,306.40 : x
  2. Step 2: Convert to fraction form
    981,172.38/1,471,758.58 = 307,306.40/x
  3. Step 3: Cross multiply
    981,172.38x = 1,471,758.58 × 307,306.40
  4. Step 4: Simplify right side
    981,172.38x = 452,280,830,888.91
  5. Step 5: Solve for x
    x = 452,280,830,888.91/981,172.38
  6. Step 6: Final answer
    x = 460,959.60

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Double scale
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Similar ratio
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1.5x scale

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.