Home / 1,238,082.30-1,857,123.45-640,211.18

Finding the Fourth Proportional to 1,238,082.30, 1,857,123.45 and 640,211.18

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Solution

The fourth proportional to 1,238,082.30, 1,857,123.45 and 640,211.18 is: 960,316.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,082.30 : 1,857,123.45 = 640,211.18 : x
  2. Step 2: Convert to fraction form
    1,238,082.30/1,857,123.45 = 640,211.18/x
  3. Step 3: Cross multiply
    1,238,082.30x = 1,857,123.45 × 640,211.18
  4. Step 4: Simplify right side
    1,238,082.30x = 1,188,951,186,044.55
  5. Step 5: Solve for x
    x = 1,188,951,186,044.55/1,238,082.30
  6. Step 6: Final answer
    x = 960,316.76

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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.