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Finding the Fourth Proportional to 618,462.72, 853,646.72 and 363,896

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Solution

The fourth proportional to 618,462.72, 853,646.72 and 363,896 is: 502,275.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,462.72 : 853,646.72 = 363,896 : x
  2. Step 2: Convert to fraction form
    618,462.72/853,646.72 = 363,896/x
  3. Step 3: Cross multiply
    618,462.72x = 853,646.72 × 363,896
  4. Step 4: Simplify right side
    618,462.72x = 310,638,626,821.12
  5. Step 5: Solve for x
    x = 310,638,626,821.12/618,462.72
  6. Step 6: Final answer
    x = 502,275.43

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.