Home / 680,780.10-1,021,208.55-207,480.90

Finding the Fourth Proportional to 680,780.10, 1,021,208.55 and 207,480.90

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Solution

The fourth proportional to 680,780.10, 1,021,208.55 and 207,480.90 is: 311,233.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,780.10 : 1,021,208.55 = 207,480.90 : x
  2. Step 2: Convert to fraction form
    680,780.10/1,021,208.55 = 207,480.90/x
  3. Step 3: Cross multiply
    680,780.10x = 1,021,208.55 × 207,480.90
  4. Step 4: Simplify right side
    680,780.10x = 211,881,269,041.70
  5. Step 5: Solve for x
    x = 211,881,269,041.70/680,780.10
  6. Step 6: Final answer
    x = 311,233.05

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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.