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Finding the Fourth Proportional to 722,249.86, 996,703.91 and 399,959.57

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Solution

The fourth proportional to 722,249.86, 996,703.91 and 399,959.57 is: 551,943.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,249.86 : 996,703.91 = 399,959.57 : x
  2. Step 2: Convert to fraction form
    722,249.86/996,703.91 = 399,959.57/x
  3. Step 3: Cross multiply
    722,249.86x = 996,703.91 × 399,959.57
  4. Step 4: Simplify right side
    722,249.86x = 398,641,267,260.92
  5. Step 5: Solve for x
    x = 398,641,267,260.92/722,249.86
  6. Step 6: Final answer
    x = 551,943.71

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1.5x scale

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.