Home / 1,242,100.80-1,863,151.20-443,408.40

Finding the Fourth Proportional to 1,242,100.80, 1,863,151.20 and 443,408.40

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Solution

The fourth proportional to 1,242,100.80, 1,863,151.20 and 443,408.40 is: 665,112.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,100.80 : 1,863,151.20 = 443,408.40 : x
  2. Step 2: Convert to fraction form
    1,242,100.80/1,863,151.20 = 443,408.40/x
  3. Step 3: Cross multiply
    1,242,100.80x = 1,863,151.20 × 443,408.40
  4. Step 4: Simplify right side
    1,242,100.80x = 826,136,892,550.08
  5. Step 5: Solve for x
    x = 826,136,892,550.08/1,242,100.80
  6. Step 6: Final answer
    x = 665,112.60

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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.