Home / 680,182.20-1,021,310.10-400,246.20

Finding the Fourth Proportional to 680,182.20, 1,021,310.10 and 400,246.20

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Solution

The fourth proportional to 680,182.20, 1,021,310.10 and 400,246.20 is: 600,979.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,182.20 : 1,021,310.10 = 400,246.20 : x
  2. Step 2: Convert to fraction form
    680,182.20/1,021,310.10 = 400,246.20/x
  3. Step 3: Cross multiply
    680,182.20x = 1,021,310.10 × 400,246.20
  4. Step 4: Simplify right side
    680,182.20x = 408,775,486,546.62
  5. Step 5: Solve for x
    x = 408,775,486,546.62/680,182.20
  6. Step 6: Final answer
    x = 600,979.39

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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.