Home / 698,228.38-963,555.56-392,304.75

Finding the Fourth Proportional to 698,228.38, 963,555.56 and 392,304.75

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Solution

The fourth proportional to 698,228.38, 963,555.56 and 392,304.75 is: 541,380.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,228.38 : 963,555.56 = 392,304.75 : x
  2. Step 2: Convert to fraction form
    698,228.38/963,555.56 = 392,304.75/x
  3. Step 3: Cross multiply
    698,228.38x = 963,555.56 × 392,304.75
  4. Step 4: Simplify right side
    698,228.38x = 378,007,423,076.91
  5. Step 5: Solve for x
    x = 378,007,423,076.91/698,228.38
  6. Step 6: Final answer
    x = 541,380.78

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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.