Home / 835,422.80-1,253,134.20-204,328.40

Finding the Fourth Proportional to 835,422.80, 1,253,134.20 and 204,328.40

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Solution

The fourth proportional to 835,422.80, 1,253,134.20 and 204,328.40 is: 306,492.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    835,422.80 : 1,253,134.20 = 204,328.40 : x
  2. Step 2: Convert to fraction form
    835,422.80/1,253,134.20 = 204,328.40/x
  3. Step 3: Cross multiply
    835,422.80x = 1,253,134.20 × 204,328.40
  4. Step 4: Simplify right side
    835,422.80x = 256,050,906,071.28
  5. Step 5: Solve for x
    x = 256,050,906,071.28/835,422.80
  6. Step 6: Final answer
    x = 306,492.60

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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.