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Finding the Fourth Proportional to 1,302,965.53, 1,954,476.68 and 917,137.71

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Solution

The fourth proportional to 1,302,965.53, 1,954,476.68 and 917,137.71 is: 1,375,726.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,302,965.53 : 1,954,476.68 = 917,137.71 : x
  2. Step 2: Convert to fraction form
    1,302,965.53/1,954,476.68 = 917,137.71/x
  3. Step 3: Cross multiply
    1,302,965.53x = 1,954,476.68 × 917,137.71
  4. Step 4: Simplify right side
    1,302,965.53x = 1,792,524,261,957.91
  5. Step 5: Solve for x
    x = 1,792,524,261,957.91/1,302,965.53
  6. Step 6: Final answer
    x = 1,375,726.54

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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.