Home / 1,083,408.20-1,625,112.30-815,719.40

Finding the Fourth Proportional to 1,083,408.20, 1,625,112.30 and 815,719.40

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Solution

The fourth proportional to 1,083,408.20, 1,625,112.30 and 815,719.40 is: 1,223,579.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,083,408.20 : 1,625,112.30 = 815,719.40 : x
  2. Step 2: Convert to fraction form
    1,083,408.20/1,625,112.30 = 815,719.40/x
  3. Step 3: Cross multiply
    1,083,408.20x = 1,625,112.30 × 815,719.40
  4. Step 4: Simplify right side
    1,083,408.20x = 1,325,635,630,288.62
  5. Step 5: Solve for x
    x = 1,325,635,630,288.62/1,083,408.20
  6. Step 6: Final answer
    x = 1,223,579.10

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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.