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Finding the Fourth Proportional to 521,163.26, 780,726.78 and 359,028.71

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Solution

The fourth proportional to 521,163.26, 780,726.78 and 359,028.71 is: 537,841.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,163.26 : 780,726.78 = 359,028.71 : x
  2. Step 2: Convert to fraction form
    521,163.26/780,726.78 = 359,028.71/x
  3. Step 3: Cross multiply
    521,163.26x = 780,726.78 × 359,028.71
  4. Step 4: Simplify right side
    521,163.26x = 280,303,328,685.85
  5. Step 5: Solve for x
    x = 280,303,328,685.85/521,163.26
  6. Step 6: Final answer
    x = 537,841.69

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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.