Home / 389,720.20-584,580.30-326,734.60

Finding the Fourth Proportional to 389,720.20, 584,580.30 and 326,734.60

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Solution

The fourth proportional to 389,720.20, 584,580.30 and 326,734.60 is: 490,101.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,720.20 : 584,580.30 = 326,734.60 : x
  2. Step 2: Convert to fraction form
    389,720.20/584,580.30 = 326,734.60/x
  3. Step 3: Cross multiply
    389,720.20x = 584,580.30 × 326,734.60
  4. Step 4: Simplify right side
    389,720.20x = 191,002,610,488.38
  5. Step 5: Solve for x
    x = 191,002,610,488.38/389,720.20
  6. Step 6: Final answer
    x = 490,101.90

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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.