Home / 680,780.60-1,021,209.30-207,481.40

Finding the Fourth Proportional to 680,780.60, 1,021,209.30 and 207,481.40

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Solution

The fourth proportional to 680,780.60, 1,021,209.30 and 207,481.40 is: 311,233.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,780.60 : 1,021,209.30 = 207,481.40 : x
  2. Step 2: Convert to fraction form
    680,780.60/1,021,209.30 = 207,481.40/x
  3. Step 3: Cross multiply
    680,780.60x = 1,021,209.30 × 207,481.40
  4. Step 4: Simplify right side
    680,780.60x = 211,881,935,257.02
  5. Step 5: Solve for x
    x = 211,881,935,257.02/680,780.60
  6. Step 6: Final answer
    x = 311,233.80

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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.