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Finding the Fourth Proportional to 978,618.75, 1,468,139.27 and 295,448.90

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Solution

The fourth proportional to 978,618.75, 1,468,139.27 and 295,448.90 is: 443,237.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,618.75 : 1,468,139.27 = 295,448.90 : x
  2. Step 2: Convert to fraction form
    978,618.75/1,468,139.27 = 295,448.90/x
  3. Step 3: Cross multiply
    978,618.75x = 1,468,139.27 × 295,448.90
  4. Step 4: Simplify right side
    978,618.75x = 433,760,123,550.36
  5. Step 5: Solve for x
    x = 433,760,123,550.36/978,618.75
  6. Step 6: Final answer
    x = 443,237.09

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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.