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Finding the Fourth Proportional to 663,344, 915,413.92 and 361,538

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Solution

The fourth proportional to 663,344, 915,413.92 and 361,538 is: 498,922.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,344 : 915,413.92 = 361,538 : x
  2. Step 2: Convert to fraction form
    663,344/915,413.92 = 361,538/x
  3. Step 3: Cross multiply
    663,344x = 915,413.92 × 361,538
  4. Step 4: Simplify right side
    663,344x = 330,956,917,808.96
  5. Step 5: Solve for x
    x = 330,956,917,808.96/663,344
  6. Step 6: Final answer
    x = 498,922.00

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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.