Home / 689,672.35-1,034,657.42-209,937.66

Finding the Fourth Proportional to 689,672.35, 1,034,657.42 and 209,937.66

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Solution

The fourth proportional to 689,672.35, 1,034,657.42 and 209,937.66 is: 314,951.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,672.35 : 1,034,657.42 = 209,937.66 : x
  2. Step 2: Convert to fraction form
    689,672.35/1,034,657.42 = 209,937.66/x
  3. Step 3: Cross multiply
    689,672.35x = 1,034,657.42 × 209,937.66
  4. Step 4: Simplify right side
    689,672.35x = 217,213,556,606.75
  5. Step 5: Solve for x
    x = 217,213,556,606.75/689,672.35
  6. Step 6: Final answer
    x = 314,951.81

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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.