Home / 787,128.45-1,180,842.36-544,990.65

Finding the Fourth Proportional to 787,128.45, 1,180,842.36 and 544,990.65

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Solution

The fourth proportional to 787,128.45, 1,180,842.36 and 544,990.65 is: 817,589.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,128.45 : 1,180,842.36 = 544,990.65 : x
  2. Step 2: Convert to fraction form
    787,128.45/1,180,842.36 = 544,990.65/x
  3. Step 3: Cross multiply
    787,128.45x = 1,180,842.36 × 544,990.65
  4. Step 4: Simplify right side
    787,128.45x = 643,548,045,323.93
  5. Step 5: Solve for x
    x = 643,548,045,323.93/787,128.45
  6. Step 6: Final answer
    x = 817,589.61

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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.