Home / 689,673.35-1,034,658.92-209,938.66

Finding the Fourth Proportional to 689,673.35, 1,034,658.92 and 209,938.66

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Solution

The fourth proportional to 689,673.35, 1,034,658.92 and 209,938.66 is: 314,953.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,673.35 : 1,034,658.92 = 209,938.66 : x
  2. Step 2: Convert to fraction form
    689,673.35/1,034,658.92 = 209,938.66/x
  3. Step 3: Cross multiply
    689,673.35x = 1,034,658.92 × 209,938.66
  4. Step 4: Simplify right side
    689,673.35x = 217,214,907,221.85
  5. Step 5: Solve for x
    x = 217,214,907,221.85/689,673.35
  6. Step 6: Final answer
    x = 314,953.31

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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.