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Finding the Fourth Proportional to 618,654.72, 853,703.10 and 363,956.70

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Solution

The fourth proportional to 618,654.72, 853,703.10 and 363,956.70 is: 502,236.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,654.72 : 853,703.10 = 363,956.70 : x
  2. Step 2: Convert to fraction form
    618,654.72/853,703.10 = 363,956.70/x
  3. Step 3: Cross multiply
    618,654.72x = 853,703.10 × 363,956.70
  4. Step 4: Simplify right side
    618,654.72x = 310,710,963,055.77
  5. Step 5: Solve for x
    x = 310,710,963,055.77/618,654.72
  6. Step 6: Final answer
    x = 502,236.47

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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.