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Finding the Fourth Proportional to 1,229,952.80, 1,845,706.80 and 724,512.80

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Solution

The fourth proportional to 1,229,952.80, 1,845,706.80 and 724,512.80 is: 1,087,227.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,229,952.80 : 1,845,706.80 = 724,512.80 : x
  2. Step 2: Convert to fraction form
    1,229,952.80/1,845,706.80 = 724,512.80/x
  3. Step 3: Cross multiply
    1,229,952.80x = 1,845,706.80 × 724,512.80
  4. Step 4: Simplify right side
    1,229,952.80x = 1,337,238,201,647.04
  5. Step 5: Solve for x
    x = 1,337,238,201,647.04/1,229,952.80
  6. Step 6: Final answer
    x = 1,087,227.25

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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.