Home / 1,290,839.76-1,936,257.62-392,277.60

Finding the Fourth Proportional to 1,290,839.76, 1,936,257.62 and 392,277.60

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Solution

The fourth proportional to 1,290,839.76, 1,936,257.62 and 392,277.60 is: 588,415.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,839.76 : 1,936,257.62 = 392,277.60 : x
  2. Step 2: Convert to fraction form
    1,290,839.76/1,936,257.62 = 392,277.60/x
  3. Step 3: Cross multiply
    1,290,839.76x = 1,936,257.62 × 392,277.60
  4. Step 4: Simplify right side
    1,290,839.76x = 759,550,490,193.92
  5. Step 5: Solve for x
    x = 759,550,490,193.92/1,290,839.76
  6. Step 6: Final answer
    x = 588,415.78

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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.