Home / 1,288,081.20-1,930,469.40-719,461.20

Finding the Fourth Proportional to 1,288,081.20, 1,930,469.40 and 719,461.20

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Solution

The fourth proportional to 1,288,081.20, 1,930,469.40 and 719,461.20 is: 1,078,268.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,081.20 : 1,930,469.40 = 719,461.20 : x
  2. Step 2: Convert to fraction form
    1,288,081.20/1,930,469.40 = 719,461.20/x
  3. Step 3: Cross multiply
    1,288,081.20x = 1,930,469.40 × 719,461.20
  4. Step 4: Simplify right side
    1,288,081.20x = 1,388,897,831,087.28
  5. Step 5: Solve for x
    x = 1,388,897,831,087.28/1,288,081.20
  6. Step 6: Final answer
    x = 1,078,268.85

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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.