Home / 393,165.20-589,747.80-386,604.20

Finding the Fourth Proportional to 393,165.20, 589,747.80 and 386,604.20

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Solution

The fourth proportional to 393,165.20, 589,747.80 and 386,604.20 is: 579,906.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,165.20 : 589,747.80 = 386,604.20 : x
  2. Step 2: Convert to fraction form
    393,165.20/589,747.80 = 386,604.20/x
  3. Step 3: Cross multiply
    393,165.20x = 589,747.80 × 386,604.20
  4. Step 4: Simplify right side
    393,165.20x = 227,998,976,420.76
  5. Step 5: Solve for x
    x = 227,998,976,420.76/393,165.20
  6. Step 6: Final answer
    x = 579,906.30

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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.