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Finding the Fourth Proportional to 2,621,695.83, 3,932,755.97 and 728,437.47

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Solution

The fourth proportional to 2,621,695.83, 3,932,755.97 and 728,437.47 is: 1,092,715.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,621,695.83 : 3,932,755.97 = 728,437.47 : x
  2. Step 2: Convert to fraction form
    2,621,695.83/3,932,755.97 = 728,437.47/x
  3. Step 3: Cross multiply
    2,621,695.83x = 3,932,755.97 × 728,437.47
  4. Step 4: Simplify right side
    2,621,695.83x = 2,864,766,805,272.01
  5. Step 5: Solve for x
    x = 2,864,766,805,272.01/2,621,695.83
  6. Step 6: Final answer
    x = 1,092,715.17

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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.