Home / 1,288,658.28-1,778,290.86-772,696.95

Finding the Fourth Proportional to 1,288,658.28, 1,778,290.86 and 772,696.95

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Solution

The fourth proportional to 1,288,658.28, 1,778,290.86 and 772,696.95 is: 1,066,287.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,658.28 : 1,778,290.86 = 772,696.95 : x
  2. Step 2: Convert to fraction form
    1,288,658.28/1,778,290.86 = 772,696.95/x
  3. Step 3: Cross multiply
    1,288,658.28x = 1,778,290.86 × 772,696.95
  4. Step 4: Simplify right side
    1,288,658.28x = 1,374,079,923,734.88
  5. Step 5: Solve for x
    x = 1,374,079,923,734.88/1,288,658.28
  6. Step 6: Final answer
    x = 1,066,287.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.