Home / 689,628.11-1,034,481.02-209,871.52

Finding the Fourth Proportional to 689,628.11, 1,034,481.02 and 209,871.52

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Solution

The fourth proportional to 689,628.11, 1,034,481.02 and 209,871.52 is: 314,819.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,628.11 : 1,034,481.02 = 209,871.52 : x
  2. Step 2: Convert to fraction form
    689,628.11/1,034,481.02 = 209,871.52/x
  3. Step 3: Cross multiply
    689,628.11x = 1,034,481.02 × 209,871.52
  4. Step 4: Simplify right side
    689,628.11x = 217,108,104,078.55
  5. Step 5: Solve for x
    x = 217,108,104,078.55/689,628.11
  6. Step 6: Final answer
    x = 314,819.10

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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.