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Finding the Fourth Proportional to 988,947.82, 1,481,502.32 and 728,813

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Solution

The fourth proportional to 988,947.82, 1,481,502.32 and 728,813 is: 1,091,804.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    988,947.82 : 1,481,502.32 = 728,813 : x
  2. Step 2: Convert to fraction form
    988,947.82/1,481,502.32 = 728,813/x
  3. Step 3: Cross multiply
    988,947.82x = 1,481,502.32 × 728,813
  4. Step 4: Simplify right side
    988,947.82x = 1,079,738,150,346.16
  5. Step 5: Solve for x
    x = 1,079,738,150,346.16/988,947.82
  6. Step 6: Final answer
    x = 1,091,804.98

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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.