Home / 810,211.20-1,215,316.80-277,660.80

Finding the Fourth Proportional to 810,211.20, 1,215,316.80 and 277,660.80

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Solution

The fourth proportional to 810,211.20, 1,215,316.80 and 277,660.80 is: 416,491.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,211.20 : 1,215,316.80 = 277,660.80 : x
  2. Step 2: Convert to fraction form
    810,211.20/1,215,316.80 = 277,660.80/x
  3. Step 3: Cross multiply
    810,211.20x = 1,215,316.80 × 277,660.80
  4. Step 4: Simplify right side
    810,211.20x = 337,445,834,941.44
  5. Step 5: Solve for x
    x = 337,445,834,941.44/810,211.20
  6. Step 6: Final answer
    x = 416,491.20

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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.