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Finding the Fourth Proportional to 720,083.93, 993,701.52 and 397,791

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Solution

The fourth proportional to 720,083.93, 993,701.52 and 397,791 is: 548,943.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,083.93 : 993,701.52 = 397,791 : x
  2. Step 2: Convert to fraction form
    720,083.93/993,701.52 = 397,791/x
  3. Step 3: Cross multiply
    720,083.93x = 993,701.52 × 397,791
  4. Step 4: Simplify right side
    720,083.93x = 395,285,521,342.32
  5. Step 5: Solve for x
    x = 395,285,521,342.32/720,083.93
  6. Step 6: Final answer
    x = 548,943.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.