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Finding the Fourth Proportional to 480,649.92, 663,379.20 and 279,562.56

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Solution

The fourth proportional to 480,649.92, 663,379.20 and 279,562.56 is: 385,844.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,649.92 : 663,379.20 = 279,562.56 : x
  2. Step 2: Convert to fraction form
    480,649.92/663,379.20 = 279,562.56/x
  3. Step 3: Cross multiply
    480,649.92x = 663,379.20 × 279,562.56
  4. Step 4: Simplify right side
    480,649.92x = 185,455,987,402.75
  5. Step 5: Solve for x
    x = 185,455,987,402.75/480,649.92
  6. Step 6: Final answer
    x = 385,844.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.