Home / 853,670.30-1,280,505.45-455,089.55

Finding the Fourth Proportional to 853,670.30, 1,280,505.45 and 455,089.55

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Solution

The fourth proportional to 853,670.30, 1,280,505.45 and 455,089.55 is: 682,634.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,670.30 : 1,280,505.45 = 455,089.55 : x
  2. Step 2: Convert to fraction form
    853,670.30/1,280,505.45 = 455,089.55/x
  3. Step 3: Cross multiply
    853,670.30x = 1,280,505.45 × 455,089.55
  4. Step 4: Simplify right side
    853,670.30x = 582,744,649,013.05
  5. Step 5: Solve for x
    x = 582,744,649,013.05/853,670.30
  6. Step 6: Final answer
    x = 682,634.33

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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.