Home / 418,913.25-628,467.07-138,413.49

Finding the Fourth Proportional to 418,913.25, 628,467.07 and 138,413.49

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Solution

The fourth proportional to 418,913.25, 628,467.07 and 138,413.49 is: 207,652.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,913.25 : 628,467.07 = 138,413.49 : x
  2. Step 2: Convert to fraction form
    418,913.25/628,467.07 = 138,413.49/x
  3. Step 3: Cross multiply
    418,913.25x = 628,467.07 × 138,413.49
  4. Step 4: Simplify right side
    418,913.25x = 86,988,320,508.77
  5. Step 5: Solve for x
    x = 86,988,320,508.77/418,913.25
  6. Step 6: Final answer
    x = 207,652.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.