Home / 780,296.78-1,170,445.17-219,331.28

Finding the Fourth Proportional to 780,296.78, 1,170,445.17 and 219,331.28

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Solution

The fourth proportional to 780,296.78, 1,170,445.17 and 219,331.28 is: 328,996.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,296.78 : 1,170,445.17 = 219,331.28 : x
  2. Step 2: Convert to fraction form
    780,296.78/1,170,445.17 = 219,331.28/x
  3. Step 3: Cross multiply
    780,296.78x = 1,170,445.17 × 219,331.28
  4. Step 4: Simplify right side
    780,296.78x = 256,715,237,305.92
  5. Step 5: Solve for x
    x = 256,715,237,305.92/780,296.78
  6. Step 6: Final answer
    x = 328,996.92

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Similar ratio
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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.