Home / 393,026.20-589,654.10-126,780.80

Finding the Fourth Proportional to 393,026.20, 589,654.10 and 126,780.80

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Solution

The fourth proportional to 393,026.20, 589,654.10 and 126,780.80 is: 190,208.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,026.20 : 589,654.10 = 126,780.80 : x
  2. Step 2: Convert to fraction form
    393,026.20/589,654.10 = 126,780.80/x
  3. Step 3: Cross multiply
    393,026.20x = 589,654.10 × 126,780.80
  4. Step 4: Simplify right side
    393,026.20x = 74,756,818,521.28
  5. Step 5: Solve for x
    x = 74,756,818,521.28/393,026.20
  6. Step 6: Final answer
    x = 190,208.23

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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.