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Finding the Fourth Proportional to 618,207.67, 853,116.53 and 346,274.87

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Solution

The fourth proportional to 618,207.67, 853,116.53 and 346,274.87 is: 477,853.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,207.67 : 853,116.53 = 346,274.87 : x
  2. Step 2: Convert to fraction form
    618,207.67/853,116.53 = 346,274.87/x
  3. Step 3: Cross multiply
    618,207.67x = 853,116.53 × 346,274.87
  4. Step 4: Simplify right side
    618,207.67x = 295,412,815,922.02
  5. Step 5: Solve for x
    x = 295,412,815,922.02/618,207.67
  6. Step 6: Final answer
    x = 477,853.69

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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.