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Finding the Fourth Proportional to 618,151.40, 927,227.10 and 380,724.20

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Solution

The fourth proportional to 618,151.40, 927,227.10 and 380,724.20 is: 571,086.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,151.40 : 927,227.10 = 380,724.20 : x
  2. Step 2: Convert to fraction form
    618,151.40/927,227.10 = 380,724.20/x
  3. Step 3: Cross multiply
    618,151.40x = 927,227.10 × 380,724.20
  4. Step 4: Simplify right side
    618,151.40x = 353,017,795,865.82
  5. Step 5: Solve for x
    x = 353,017,795,865.82/618,151.40
  6. Step 6: Final answer
    x = 571,086.30

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Half scale
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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.