Home / 1,209,960.60-1,810,380.74-721,837.59

Finding the Fourth Proportional to 1,209,960.60, 1,810,380.74 and 721,837.59

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Solution

The fourth proportional to 1,209,960.60, 1,810,380.74 and 721,837.59 is: 1,080,035.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,960.60 : 1,810,380.74 = 721,837.59 : x
  2. Step 2: Convert to fraction form
    1,209,960.60/1,810,380.74 = 721,837.59/x
  3. Step 3: Cross multiply
    1,209,960.60x = 1,810,380.74 × 721,837.59
  4. Step 4: Simplify right side
    1,209,960.60x = 1,306,800,866,734.83
  5. Step 5: Solve for x
    x = 1,306,800,866,734.83/1,209,960.60
  6. Step 6: Final answer
    x = 1,080,035.88

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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.