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Finding the Fourth Proportional to 618,504.66, 853,515.78 and 342,850.93

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Solution

The fourth proportional to 618,504.66, 853,515.78 and 342,850.93 is: 473,122.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,504.66 : 853,515.78 = 342,850.93 : x
  2. Step 2: Convert to fraction form
    618,504.66/853,515.78 = 342,850.93/x
  3. Step 3: Cross multiply
    618,504.66x = 853,515.78 × 342,850.93
  4. Step 4: Simplify right side
    618,504.66x = 292,628,677,451.73
  5. Step 5: Solve for x
    x = 292,628,677,451.73/618,504.66
  6. Step 6: Final answer
    x = 473,122.83

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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.