Home / 1,040,200.30-1,560,300.45-680,949.10

Finding the Fourth Proportional to 1,040,200.30, 1,560,300.45 and 680,949.10

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Solution

The fourth proportional to 1,040,200.30, 1,560,300.45 and 680,949.10 is: 1,021,423.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040,200.30 : 1,560,300.45 = 680,949.10 : x
  2. Step 2: Convert to fraction form
    1,040,200.30/1,560,300.45 = 680,949.10/x
  3. Step 3: Cross multiply
    1,040,200.30x = 1,560,300.45 × 680,949.10
  4. Step 4: Simplify right side
    1,040,200.30x = 1,062,485,187,157.10
  5. Step 5: Solve for x
    x = 1,062,485,187,157.10/1,040,200.30
  6. Step 6: Final answer
    x = 1,021,423.65

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Double scale
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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.