Home / 1,815,126.80-2,722,690.20-485,430.80

Finding the Fourth Proportional to 1,815,126.80, 2,722,690.20 and 485,430.80

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Solution

The fourth proportional to 1,815,126.80, 2,722,690.20 and 485,430.80 is: 728,146.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,815,126.80 : 2,722,690.20 = 485,430.80 : x
  2. Step 2: Convert to fraction form
    1,815,126.80/2,722,690.20 = 485,430.80/x
  3. Step 3: Cross multiply
    1,815,126.80x = 2,722,690.20 × 485,430.80
  4. Step 4: Simplify right side
    1,815,126.80x = 1,321,677,681,938.16
  5. Step 5: Solve for x
    x = 1,321,677,681,938.16/1,815,126.80
  6. Step 6: Final answer
    x = 728,146.20

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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.