Home / 845,381.60-1,269,198.30-490,650.20

Finding the Fourth Proportional to 845,381.60, 1,269,198.30 and 490,650.20

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Solution

The fourth proportional to 845,381.60, 1,269,198.30 and 490,650.20 is: 736,628.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    845,381.60 : 1,269,198.30 = 490,650.20 : x
  2. Step 2: Convert to fraction form
    845,381.60/1,269,198.30 = 490,650.20/x
  3. Step 3: Cross multiply
    845,381.60x = 1,269,198.30 × 490,650.20
  4. Step 4: Simplify right side
    845,381.60x = 622,732,399,734.66
  5. Step 5: Solve for x
    x = 622,732,399,734.66/845,381.60
  6. Step 6: Final answer
    x = 736,628.76

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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.