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Finding the Fourth Proportional to 724,732.88, 1,087,473 and 325,651.28

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Solution

The fourth proportional to 724,732.88, 1,087,473 and 325,651.28 is: 488,644.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,732.88 : 1,087,473 = 325,651.28 : x
  2. Step 2: Convert to fraction form
    724,732.88/1,087,473 = 325,651.28/x
  3. Step 3: Cross multiply
    724,732.88x = 1,087,473 × 325,651.28
  4. Step 4: Simplify right side
    724,732.88x = 354,136,974,415.44
  5. Step 5: Solve for x
    x = 354,136,974,415.44/724,732.88
  6. Step 6: Final answer
    x = 488,644.83

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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.