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Finding the Fourth Proportional to 722,398, 996,531.28 and 446,667.71

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Solution

The fourth proportional to 722,398, 996,531.28 and 446,667.71 is: 616,167.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,398 : 996,531.28 = 446,667.71 : x
  2. Step 2: Convert to fraction form
    722,398/996,531.28 = 446,667.71/x
  3. Step 3: Cross multiply
    722,398x = 996,531.28 × 446,667.71
  4. Step 4: Simplify right side
    722,398x = 445,118,344,780.97
  5. Step 5: Solve for x
    x = 445,118,344,780.97/722,398
  6. Step 6: Final answer
    x = 616,167.74

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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.