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Finding the Fourth Proportional to 722,879.13, 997,578.77 and 400,594.44

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Solution

The fourth proportional to 722,879.13, 997,578.77 and 400,594.44 is: 552,823.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,879.13 : 997,578.77 = 400,594.44 : x
  2. Step 2: Convert to fraction form
    722,879.13/997,578.77 = 400,594.44/x
  3. Step 3: Cross multiply
    722,879.13x = 997,578.77 × 400,594.44
  4. Step 4: Simplify right side
    722,879.13x = 399,624,508,724.04
  5. Step 5: Solve for x
    x = 399,624,508,724.04/722,879.13
  6. Step 6: Final answer
    x = 552,823.41

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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.