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Finding the Fourth Proportional to 618,502.62, 853,519.14 and 363,870.18

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Solution

The fourth proportional to 618,502.62, 853,519.14 and 363,870.18 is: 502,132.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,502.62 : 853,519.14 = 363,870.18 : x
  2. Step 2: Convert to fraction form
    618,502.62/853,519.14 = 363,870.18/x
  3. Step 3: Cross multiply
    618,502.62x = 853,519.14 × 363,870.18
  4. Step 4: Simplify right side
    618,502.62x = 310,570,163,105.25
  5. Step 5: Solve for x
    x = 310,570,163,105.25/618,502.62
  6. Step 6: Final answer
    x = 502,132.33

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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.