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Finding the Fourth Proportional to 1,865,749.23, 2,798,614.31 and 728,626.91

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Solution

The fourth proportional to 1,865,749.23, 2,798,614.31 and 728,626.91 is: 1,092,936.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,865,749.23 : 2,798,614.31 = 728,626.91 : x
  2. Step 2: Convert to fraction form
    1,865,749.23/2,798,614.31 = 728,626.91/x
  3. Step 3: Cross multiply
    1,865,749.23x = 2,798,614.31 × 728,626.91
  4. Step 4: Simplify right side
    1,865,749.23x = 2,039,145,679,340.88
  5. Step 5: Solve for x
    x = 2,039,145,679,340.88/1,865,749.23
  6. Step 6: Final answer
    x = 1,092,936.63

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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.