Home / 1,131,124-1,560,960.72-621,815.20

Finding the Fourth Proportional to 1,131,124, 1,560,960.72 and 621,815.20

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Solution

The fourth proportional to 1,131,124, 1,560,960.72 and 621,815.20 is: 858,110.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131,124 : 1,560,960.72 = 621,815.20 : x
  2. Step 2: Convert to fraction form
    1,131,124/1,560,960.72 = 621,815.20/x
  3. Step 3: Cross multiply
    1,131,124x = 1,560,960.72 × 621,815.20
  4. Step 4: Simplify right side
    1,131,124x = 970,629,102,298.94
  5. Step 5: Solve for x
    x = 970,629,102,298.94/1,131,124
  6. Step 6: Final answer
    x = 858,110.25

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.