Home / 814,876.20-1,221,330.15-415,311.30

Finding the Fourth Proportional to 814,876.20, 1,221,330.15 and 415,311.30

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Solution

The fourth proportional to 814,876.20, 1,221,330.15 and 415,311.30 is: 622,465.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,876.20 : 1,221,330.15 = 415,311.30 : x
  2. Step 2: Convert to fraction form
    814,876.20/1,221,330.15 = 415,311.30/x
  3. Step 3: Cross multiply
    814,876.20x = 1,221,330.15 × 415,311.30
  4. Step 4: Simplify right side
    814,876.20x = 507,232,212,325.70
  5. Step 5: Solve for x
    x = 507,232,212,325.70/814,876.20
  6. Step 6: Final answer
    x = 622,465.37

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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.