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Finding the Fourth Proportional to 1,180,469.84, 1,629,045 and 643,922

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Solution

The fourth proportional to 1,180,469.84, 1,629,045 and 643,922 is: 888,610.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,180,469.84 : 1,629,045 = 643,922 : x
  2. Step 2: Convert to fraction form
    1,180,469.84/1,629,045 = 643,922/x
  3. Step 3: Cross multiply
    1,180,469.84x = 1,629,045 × 643,922
  4. Step 4: Simplify right side
    1,180,469.84x = 1,048,977,914,490
  5. Step 5: Solve for x
    x = 1,048,977,914,490/1,180,469.84
  6. Step 6: Final answer
    x = 888,610.52

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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.