Home / 698,103.15-963,277.38-392,120.91

Finding the Fourth Proportional to 698,103.15, 963,277.38 and 392,120.91

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Solution

The fourth proportional to 698,103.15, 963,277.38 and 392,120.91 is: 541,067.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,103.15 : 963,277.38 = 392,120.91 : x
  2. Step 2: Convert to fraction form
    698,103.15/963,277.38 = 392,120.91/x
  3. Step 3: Cross multiply
    698,103.15x = 963,277.38 × 392,120.91
  4. Step 4: Simplify right side
    698,103.15x = 377,721,202,828.02
  5. Step 5: Solve for x
    x = 377,721,202,828.02/698,103.15
  6. Step 6: Final answer
    x = 541,067.90

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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.