Home / 469,115.28-647,363.16-278,015.40

Finding the Fourth Proportional to 469,115.28, 647,363.16 and 278,015.40

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Solution

The fourth proportional to 469,115.28, 647,363.16 and 278,015.40 is: 383,651.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,115.28 : 647,363.16 = 278,015.40 : x
  2. Step 2: Convert to fraction form
    469,115.28/647,363.16 = 278,015.40/x
  3. Step 3: Cross multiply
    469,115.28x = 647,363.16 × 278,015.40
  4. Step 4: Simplify right side
    469,115.28x = 179,976,927,872.66
  5. Step 5: Solve for x
    x = 179,976,927,872.66/469,115.28
  6. Step 6: Final answer
    x = 383,651.81

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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.