Home / 815,654.72-1,223,701.86-342,212.96

Finding the Fourth Proportional to 815,654.72, 1,223,701.86 and 342,212.96

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Solution

The fourth proportional to 815,654.72, 1,223,701.86 and 342,212.96 is: 513,411.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,654.72 : 1,223,701.86 = 342,212.96 : x
  2. Step 2: Convert to fraction form
    815,654.72/1,223,701.86 = 342,212.96/x
  3. Step 3: Cross multiply
    815,654.72x = 1,223,701.86 × 342,212.96
  4. Step 4: Simplify right side
    815,654.72x = 418,766,635,668.11
  5. Step 5: Solve for x
    x = 418,766,635,668.11/815,654.72
  6. Step 6: Final answer
    x = 513,411.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.