Home / 851,470.79-1,275,760.85-513,801.95

Finding the Fourth Proportional to 851,470.79, 1,275,760.85 and 513,801.95

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Solution

The fourth proportional to 851,470.79, 1,275,760.85 and 513,801.95 is: 769,830.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,470.79 : 1,275,760.85 = 513,801.95 : x
  2. Step 2: Convert to fraction form
    851,470.79/1,275,760.85 = 513,801.95/x
  3. Step 3: Cross multiply
    851,470.79x = 1,275,760.85 × 513,801.95
  4. Step 4: Simplify right side
    851,470.79x = 655,488,403,515.84
  5. Step 5: Solve for x
    x = 655,488,403,515.84/851,470.79
  6. Step 6: Final answer
    x = 769,830.76

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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.