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Finding the Fourth Proportional to 573,998.79, 792,121.95 and 315,868.60

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Solution

The fourth proportional to 573,998.79, 792,121.95 and 315,868.60 is: 435,900.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,998.79 : 792,121.95 = 315,868.60 : x
  2. Step 2: Convert to fraction form
    573,998.79/792,121.95 = 315,868.60/x
  3. Step 3: Cross multiply
    573,998.79x = 792,121.95 × 315,868.60
  4. Step 4: Simplify right side
    573,998.79x = 250,206,451,375.77
  5. Step 5: Solve for x
    x = 250,206,451,375.77/573,998.79
  6. Step 6: Final answer
    x = 435,900.66

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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.