Home / 928,470.78-1,392,706.17-612,853.88

Finding the Fourth Proportional to 928,470.78, 1,392,706.17 and 612,853.88

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Solution

The fourth proportional to 928,470.78, 1,392,706.17 and 612,853.88 is: 919,280.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,470.78 : 1,392,706.17 = 612,853.88 : x
  2. Step 2: Convert to fraction form
    928,470.78/1,392,706.17 = 612,853.88/x
  3. Step 3: Cross multiply
    928,470.78x = 1,392,706.17 × 612,853.88
  4. Step 4: Simplify right side
    928,470.78x = 853,525,373,020.91
  5. Step 5: Solve for x
    x = 853,525,373,020.91/928,470.78
  6. Step 6: Final answer
    x = 919,280.81

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1.5x scale

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.