Home / 807,842.20-1,211,763.30-275,315.80

Finding the Fourth Proportional to 807,842.20, 1,211,763.30 and 275,315.80

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Solution

The fourth proportional to 807,842.20, 1,211,763.30 and 275,315.80 is: 412,973.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,842.20 : 1,211,763.30 = 275,315.80 : x
  2. Step 2: Convert to fraction form
    807,842.20/1,211,763.30 = 275,315.80/x
  3. Step 3: Cross multiply
    807,842.20x = 1,211,763.30 × 275,315.80
  4. Step 4: Simplify right side
    807,842.20x = 333,617,582,350.14
  5. Step 5: Solve for x
    x = 333,617,582,350.14/807,842.20
  6. Step 6: Final answer
    x = 412,973.70

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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.