Home / 852,243.40-1,278,365.10-319,781.80

Finding the Fourth Proportional to 852,243.40, 1,278,365.10 and 319,781.80

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Solution

The fourth proportional to 852,243.40, 1,278,365.10 and 319,781.80 is: 479,672.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    852,243.40 : 1,278,365.10 = 319,781.80 : x
  2. Step 2: Convert to fraction form
    852,243.40/1,278,365.10 = 319,781.80/x
  3. Step 3: Cross multiply
    852,243.40x = 1,278,365.10 × 319,781.80
  4. Step 4: Simplify right side
    852,243.40x = 408,797,892,735.18
  5. Step 5: Solve for x
    x = 408,797,892,735.18/852,243.40
  6. Step 6: Final answer
    x = 479,672.70

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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.