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Finding the Fourth Proportional to 503,365.19, 694,660.46 and 288,545.90

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Solution

The fourth proportional to 503,365.19, 694,660.46 and 288,545.90 is: 398,202.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,365.19 : 694,660.46 = 288,545.90 : x
  2. Step 2: Convert to fraction form
    503,365.19/694,660.46 = 288,545.90/x
  3. Step 3: Cross multiply
    503,365.19x = 694,660.46 × 288,545.90
  4. Step 4: Simplify right side
    503,365.19x = 200,441,422,709.08
  5. Step 5: Solve for x
    x = 200,441,422,709.08/503,365.19
  6. Step 6: Final answer
    x = 398,202.79

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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.