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Finding the Fourth Proportional to 917,793.90, 1,375,816.05 and 715,277.70

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Solution

The fourth proportional to 917,793.90, 1,375,816.05 and 715,277.70 is: 1,072,234.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,793.90 : 1,375,816.05 = 715,277.70 : x
  2. Step 2: Convert to fraction form
    917,793.90/1,375,816.05 = 715,277.70/x
  3. Step 3: Cross multiply
    917,793.90x = 1,375,816.05 × 715,277.70
  4. Step 4: Simplify right side
    917,793.90x = 984,090,539,867.09
  5. Step 5: Solve for x
    x = 984,090,539,867.09/917,793.90
  6. Step 6: Final answer
    x = 1,072,234.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.