Home / 877,257.28-1,315,910.88-278,221.12

Finding the Fourth Proportional to 877,257.28, 1,315,910.88 and 278,221.12

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Solution

The fourth proportional to 877,257.28, 1,315,910.88 and 278,221.12 is: 417,339.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,257.28 : 1,315,910.88 = 278,221.12 : x
  2. Step 2: Convert to fraction form
    877,257.28/1,315,910.88 = 278,221.12/x
  3. Step 3: Cross multiply
    877,257.28x = 1,315,910.88 × 278,221.12
  4. Step 4: Simplify right side
    877,257.28x = 366,114,198,853.79
  5. Step 5: Solve for x
    x = 366,114,198,853.79/877,257.28
  6. Step 6: Final answer
    x = 417,339.60

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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.