Home / 1,217,186.82-1,679,151.87-787,605.66

Finding the Fourth Proportional to 1,217,186.82, 1,679,151.87 and 787,605.66

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Solution

The fourth proportional to 1,217,186.82, 1,679,151.87 and 787,605.66 is: 1,086,529.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217,186.82 : 1,679,151.87 = 787,605.66 : x
  2. Step 2: Convert to fraction form
    1,217,186.82/1,679,151.87 = 787,605.66/x
  3. Step 3: Cross multiply
    1,217,186.82x = 1,679,151.87 × 787,605.66
  4. Step 4: Simplify right side
    1,217,186.82x = 1,322,509,516,811.58
  5. Step 5: Solve for x
    x = 1,322,509,516,811.58/1,217,186.82
  6. Step 6: Final answer
    x = 1,086,529.61

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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.