Home / 1,421,011.40-2,131,517.10-1,230,240.20

Finding the Fourth Proportional to 1,421,011.40, 2,131,517.10 and 1,230,240.20

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Solution

The fourth proportional to 1,421,011.40, 2,131,517.10 and 1,230,240.20 is: 1,845,360.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,011.40 : 2,131,517.10 = 1,230,240.20 : x
  2. Step 2: Convert to fraction form
    1,421,011.40/2,131,517.10 = 1,230,240.20/x
  3. Step 3: Cross multiply
    1,421,011.40x = 2,131,517.10 × 1,230,240.20
  4. Step 4: Simplify right side
    1,421,011.40x = 2,622,278,023,407.42
  5. Step 5: Solve for x
    x = 2,622,278,023,407.42/1,421,011.40
  6. Step 6: Final answer
    x = 1,845,360.30

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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.