Home / 389,724.20-584,586.30-326,738.60

Finding the Fourth Proportional to 389,724.20, 584,586.30 and 326,738.60

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Solution

The fourth proportional to 389,724.20, 584,586.30 and 326,738.60 is: 490,107.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,724.20 : 584,586.30 = 326,738.60 : x
  2. Step 2: Convert to fraction form
    389,724.20/584,586.30 = 326,738.60/x
  3. Step 3: Cross multiply
    389,724.20x = 584,586.30 × 326,738.60
  4. Step 4: Simplify right side
    389,724.20x = 191,006,909,241.18
  5. Step 5: Solve for x
    x = 191,006,909,241.18/389,724.20
  6. Step 6: Final answer
    x = 490,107.90

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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.