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Finding the Fourth Proportional to 611,062.60, 843,367.81 and 356,413.79

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Solution

The fourth proportional to 611,062.60, 843,367.81 and 356,413.79 is: 491,910.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,062.60 : 843,367.81 = 356,413.79 : x
  2. Step 2: Convert to fraction form
    611,062.60/843,367.81 = 356,413.79/x
  3. Step 3: Cross multiply
    611,062.60x = 843,367.81 × 356,413.79
  4. Step 4: Simplify right side
    611,062.60x = 300,587,917,526.10
  5. Step 5: Solve for x
    x = 300,587,917,526.10/611,062.60
  6. Step 6: Final answer
    x = 491,910.19

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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.