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Finding the Fourth Proportional to 618,495.60, 853,509.48 and 363,863.18

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Solution

The fourth proportional to 618,495.60, 853,509.48 and 363,863.18 is: 502,122.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,495.60 : 853,509.48 = 363,863.18 : x
  2. Step 2: Convert to fraction form
    618,495.60/853,509.48 = 363,863.18/x
  3. Step 3: Cross multiply
    618,495.60x = 853,509.48 × 363,863.18
  4. Step 4: Simplify right side
    618,495.60x = 310,560,673,552.95
  5. Step 5: Solve for x
    x = 310,560,673,552.95/618,495.60
  6. Step 6: Final answer
    x = 502,122.69

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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.