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Finding the Fourth Proportional to 618,005.40, 927,008.10 and 243,979.80

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Solution

The fourth proportional to 618,005.40, 927,008.10 and 243,979.80 is: 365,969.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,005.40 : 927,008.10 = 243,979.80 : x
  2. Step 2: Convert to fraction form
    618,005.40/927,008.10 = 243,979.80/x
  3. Step 3: Cross multiply
    618,005.40x = 927,008.10 × 243,979.80
  4. Step 4: Simplify right side
    618,005.40x = 226,171,250,836.38
  5. Step 5: Solve for x
    x = 226,171,250,836.38/618,005.40
  6. Step 6: Final answer
    x = 365,969.70

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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.