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Finding the Fourth Proportional to 404,427.30, 606,640.95 and 311,115.30

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Solution

The fourth proportional to 404,427.30, 606,640.95 and 311,115.30 is: 466,672.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,427.30 : 606,640.95 = 311,115.30 : x
  2. Step 2: Convert to fraction form
    404,427.30/606,640.95 = 311,115.30/x
  3. Step 3: Cross multiply
    404,427.30x = 606,640.95 × 311,115.30
  4. Step 4: Simplify right side
    404,427.30x = 188,735,281,151.54
  5. Step 5: Solve for x
    x = 188,735,281,151.54/404,427.30
  6. Step 6: Final answer
    x = 466,672.95

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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.