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Finding the Fourth Proportional to 1,081,469.72, 1,623,606.96 and 723,928.02

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Solution

The fourth proportional to 1,081,469.72, 1,623,606.96 and 723,928.02 is: 1,086,830.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,081,469.72 : 1,623,606.96 = 723,928.02 : x
  2. Step 2: Convert to fraction form
    1,081,469.72/1,623,606.96 = 723,928.02/x
  3. Step 3: Cross multiply
    1,081,469.72x = 1,623,606.96 × 723,928.02
  4. Step 4: Simplify right side
    1,081,469.72x = 1,175,374,571,811.02
  5. Step 5: Solve for x
    x = 1,175,374,571,811.02/1,081,469.72
  6. Step 6: Final answer
    x = 1,086,830.77

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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.