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Finding the Fourth Proportional to 722,081.39, 996,487.52 and 395,408.12

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Solution

The fourth proportional to 722,081.39, 996,487.52 and 395,408.12 is: 545,671.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,081.39 : 996,487.52 = 395,408.12 : x
  2. Step 2: Convert to fraction form
    722,081.39/996,487.52 = 395,408.12/x
  3. Step 3: Cross multiply
    722,081.39x = 996,487.52 × 395,408.12
  4. Step 4: Simplify right side
    722,081.39x = 394,019,249,927.18
  5. Step 5: Solve for x
    x = 394,019,249,927.18/722,081.39
  6. Step 6: Final answer
    x = 545,671.52

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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.