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Finding the Fourth Proportional to 988,948.82, 1,481,503.82 and 728,814

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Solution

The fourth proportional to 988,948.82, 1,481,503.82 and 728,814 is: 1,091,806.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    988,948.82 : 1,481,503.82 = 728,814 : x
  2. Step 2: Convert to fraction form
    988,948.82/1,481,503.82 = 728,814/x
  3. Step 3: Cross multiply
    988,948.82x = 1,481,503.82 × 728,814
  4. Step 4: Simplify right side
    988,948.82x = 1,079,740,725,069.48
  5. Step 5: Solve for x
    x = 1,079,740,725,069.48/988,948.82
  6. Step 6: Final answer
    x = 1,091,806.47

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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.