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Finding the Fourth Proportional to 618,353.57, 853,326.05 and 342,729.02

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Solution

The fourth proportional to 618,353.57, 853,326.05 and 342,729.02 is: 472,965.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,353.57 : 853,326.05 = 342,729.02 : x
  2. Step 2: Convert to fraction form
    618,353.57/853,326.05 = 342,729.02/x
  3. Step 3: Cross multiply
    618,353.57x = 853,326.05 × 342,729.02
  4. Step 4: Simplify right side
    618,353.57x = 292,459,594,876.70
  5. Step 5: Solve for x
    x = 292,459,594,876.70/618,353.57
  6. Step 6: Final answer
    x = 472,965.00

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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.