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Finding the Fourth Proportional to 821,318, 1,132,793.93 and 706,789.37

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Solution

The fourth proportional to 821,318, 1,132,793.93 and 706,789.37 is: 974,831.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,318 : 1,132,793.93 = 706,789.37 : x
  2. Step 2: Convert to fraction form
    821,318/1,132,793.93 = 706,789.37/x
  3. Step 3: Cross multiply
    821,318x = 1,132,793.93 × 706,789.37
  4. Step 4: Simplify right side
    821,318x = 800,646,698,926.61
  5. Step 5: Solve for x
    x = 800,646,698,926.61/821,318
  6. Step 6: Final answer
    x = 974,831.55

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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.