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Finding the Fourth Proportional to 652,247.65, 978,371.48 and 278,999.65

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Solution

The fourth proportional to 652,247.65, 978,371.48 and 278,999.65 is: 418,499.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,247.65 : 978,371.48 = 278,999.65 : x
  2. Step 2: Convert to fraction form
    652,247.65/978,371.48 = 278,999.65/x
  3. Step 3: Cross multiply
    652,247.65x = 978,371.48 × 278,999.65
  4. Step 4: Simplify right side
    652,247.65x = 272,965,300,489.98
  5. Step 5: Solve for x
    x = 272,965,300,489.98/652,247.65
  6. Step 6: Final answer
    x = 418,499.48

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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.