Home / 1,290,718.80-1,936,077-392,156.88

Finding the Fourth Proportional to 1,290,718.80, 1,936,077 and 392,156.88

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Solution

The fourth proportional to 1,290,718.80, 1,936,077 and 392,156.88 is: 588,234.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,718.80 : 1,936,077 = 392,156.88 : x
  2. Step 2: Convert to fraction form
    1,290,718.80/1,936,077 = 392,156.88/x
  3. Step 3: Cross multiply
    1,290,718.80x = 1,936,077 × 392,156.88
  4. Step 4: Simplify right side
    1,290,718.80x = 759,245,915,759.76
  5. Step 5: Solve for x
    x = 759,245,915,759.76/1,290,718.80
  6. Step 6: Final answer
    x = 588,234.96

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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.