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Finding the Fourth Proportional to 722,726.26, 997,328.64 and 396,037.33

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Solution

The fourth proportional to 722,726.26, 997,328.64 and 396,037.33 is: 546,513.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,726.26 : 997,328.64 = 396,037.33 : x
  2. Step 2: Convert to fraction form
    722,726.26/997,328.64 = 396,037.33/x
  3. Step 3: Cross multiply
    722,726.26x = 997,328.64 × 396,037.33
  4. Step 4: Simplify right side
    722,726.26x = 394,979,371,718.13
  5. Step 5: Solve for x
    x = 394,979,371,718.13/722,726.26
  6. Step 6: Final answer
    x = 546,513.10

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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.