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Finding the Fourth Proportional to 618,563.60, 853,574.64 and 342,918.73

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Solution

The fourth proportional to 618,563.60, 853,574.64 and 342,918.73 is: 473,203.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,563.60 : 853,574.64 = 342,918.73 : x
  2. Step 2: Convert to fraction form
    618,563.60/853,574.64 = 342,918.73/x
  3. Step 3: Cross multiply
    618,563.60x = 853,574.64 × 342,918.73
  4. Step 4: Simplify right side
    618,563.60x = 292,706,731,290.03
  5. Step 5: Solve for x
    x = 292,706,731,290.03/618,563.60
  6. Step 6: Final answer
    x = 473,203.94

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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.