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Finding the Fourth Proportional to 1,287,629.84, 1,776,974.28 and 714,733.04

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Solution

The fourth proportional to 1,287,629.84, 1,776,974.28 and 714,733.04 is: 986,356.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,629.84 : 1,776,974.28 = 714,733.04 : x
  2. Step 2: Convert to fraction form
    1,287,629.84/1,776,974.28 = 714,733.04/x
  3. Step 3: Cross multiply
    1,287,629.84x = 1,776,974.28 × 714,733.04
  4. Step 4: Simplify right side
    1,287,629.84x = 1,270,062,229,146.21
  5. Step 5: Solve for x
    x = 1,270,062,229,146.21/1,287,629.84
  6. Step 6: Final answer
    x = 986,356.63

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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.