Home / 642,610.70-963,916.05-327,682.70

Finding the Fourth Proportional to 642,610.70, 963,916.05 and 327,682.70

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Solution

The fourth proportional to 642,610.70, 963,916.05 and 327,682.70 is: 491,524.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,610.70 : 963,916.05 = 327,682.70 : x
  2. Step 2: Convert to fraction form
    642,610.70/963,916.05 = 327,682.70/x
  3. Step 3: Cross multiply
    642,610.70x = 963,916.05 × 327,682.70
  4. Step 4: Simplify right side
    642,610.70x = 315,858,613,837.34
  5. Step 5: Solve for x
    x = 315,858,613,837.34/642,610.70
  6. Step 6: Final answer
    x = 491,524.05

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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.