Home / 621,724.52-857,902.66-392,194.80

Finding the Fourth Proportional to 621,724.52, 857,902.66 and 392,194.80

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Solution

The fourth proportional to 621,724.52, 857,902.66 and 392,194.80 is: 541,180.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,724.52 : 857,902.66 = 392,194.80 : x
  2. Step 2: Convert to fraction form
    621,724.52/857,902.66 = 392,194.80/x
  3. Step 3: Cross multiply
    621,724.52x = 857,902.66 × 392,194.80
  4. Step 4: Simplify right side
    621,724.52x = 336,464,962,158.17
  5. Step 5: Solve for x
    x = 336,464,962,158.17/621,724.52
  6. Step 6: Final answer
    x = 541,180.14

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.