Home / 782,416.28-1,080,272.28-528,123.80

Finding the Fourth Proportional to 782,416.28, 1,080,272.28 and 528,123.80

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Solution

The fourth proportional to 782,416.28, 1,080,272.28 and 528,123.80 is: 729,173.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,416.28 : 1,080,272.28 = 528,123.80 : x
  2. Step 2: Convert to fraction form
    782,416.28/1,080,272.28 = 528,123.80/x
  3. Step 3: Cross multiply
    782,416.28x = 1,080,272.28 × 528,123.80
  4. Step 4: Simplify right side
    782,416.28x = 570,517,501,548.26
  5. Step 5: Solve for x
    x = 570,517,501,548.26/782,416.28
  6. Step 6: Final answer
    x = 729,173.86

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.