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Finding the Fourth Proportional to 609,318.78, 840,868.80 and 351,053.22

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Solution

The fourth proportional to 609,318.78, 840,868.80 and 351,053.22 is: 484,458.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,318.78 : 840,868.80 = 351,053.22 : x
  2. Step 2: Convert to fraction form
    609,318.78/840,868.80 = 351,053.22/x
  3. Step 3: Cross multiply
    609,318.78x = 840,868.80 × 351,053.22
  4. Step 4: Simplify right side
    609,318.78x = 295,189,699,837.54
  5. Step 5: Solve for x
    x = 295,189,699,837.54/609,318.78
  6. Step 6: Final answer
    x = 484,458.56

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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.