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Finding the Fourth Proportional to 618,562.47, 853,573.09 and 342,917.60

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Solution

The fourth proportional to 618,562.47, 853,573.09 and 342,917.60 is: 473,202.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,562.47 : 853,573.09 = 342,917.60 : x
  2. Step 2: Convert to fraction form
    618,562.47/853,573.09 = 342,917.60/x
  3. Step 3: Cross multiply
    618,562.47x = 853,573.09 × 342,917.60
  4. Step 4: Simplify right side
    618,562.47x = 292,705,235,766.54
  5. Step 5: Solve for x
    x = 292,705,235,766.54/618,562.47
  6. Step 6: Final answer
    x = 473,202.38

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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.