Home / 720,405.12-1,081,338.87-360,833.61

Finding the Fourth Proportional to 720,405.12, 1,081,338.87 and 360,833.61

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Solution

The fourth proportional to 720,405.12, 1,081,338.87 and 360,833.61 is: 541,616.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,405.12 : 1,081,338.87 = 360,833.61 : x
  2. Step 2: Convert to fraction form
    720,405.12/1,081,338.87 = 360,833.61/x
  3. Step 3: Cross multiply
    720,405.12x = 1,081,338.87 × 360,833.61
  4. Step 4: Simplify right side
    720,405.12x = 390,183,409,447.46
  5. Step 5: Solve for x
    x = 390,183,409,447.46/720,405.12
  6. Step 6: Final answer
    x = 541,616.66

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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.