Home / 1,761,179.60-2,640,019.80-861,885.20

Finding the Fourth Proportional to 1,761,179.60, 2,640,019.80 and 861,885.20

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Solution

The fourth proportional to 1,761,179.60, 2,640,019.80 and 861,885.20 is: 1,291,971.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,761,179.60 : 2,640,019.80 = 861,885.20 : x
  2. Step 2: Convert to fraction form
    1,761,179.60/2,640,019.80 = 861,885.20/x
  3. Step 3: Cross multiply
    1,761,179.60x = 2,640,019.80 × 861,885.20
  4. Step 4: Simplify right side
    1,761,179.60x = 2,275,393,993,326.96
  5. Step 5: Solve for x
    x = 2,275,393,993,326.96/1,761,179.60
  6. Step 6: Final answer
    x = 1,291,971.58

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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.