Home / 1,259,171.20-1,889,217.60-511,292.80

Finding the Fourth Proportional to 1,259,171.20, 1,889,217.60 and 511,292.80

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Solution

The fourth proportional to 1,259,171.20, 1,889,217.60 and 511,292.80 is: 767,126.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259,171.20 : 1,889,217.60 = 511,292.80 : x
  2. Step 2: Convert to fraction form
    1,259,171.20/1,889,217.60 = 511,292.80/x
  3. Step 3: Cross multiply
    1,259,171.20x = 1,889,217.60 × 511,292.80
  4. Step 4: Simplify right side
    1,259,171.20x = 965,943,356,513.28
  5. Step 5: Solve for x
    x = 965,943,356,513.28/1,259,171.20
  6. Step 6: Final answer
    x = 767,126.31

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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.