Home / 668,909.20-1,003,363.80-313,959.10

Finding the Fourth Proportional to 668,909.20, 1,003,363.80 and 313,959.10

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Solution

The fourth proportional to 668,909.20, 1,003,363.80 and 313,959.10 is: 470,938.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,909.20 : 1,003,363.80 = 313,959.10 : x
  2. Step 2: Convert to fraction form
    668,909.20/1,003,363.80 = 313,959.10/x
  3. Step 3: Cross multiply
    668,909.20x = 1,003,363.80 × 313,959.10
  4. Step 4: Simplify right side
    668,909.20x = 315,015,195,620.58
  5. Step 5: Solve for x
    x = 315,015,195,620.58/668,909.20
  6. Step 6: Final answer
    x = 470,938.65

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Similar ratio
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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.