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Finding the Fourth Proportional to 572,413.74, 789,891.38 and 317,744.88

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Solution

The fourth proportional to 572,413.74, 789,891.38 and 317,744.88 is: 438,465.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,413.74 : 789,891.38 = 317,744.88 : x
  2. Step 2: Convert to fraction form
    572,413.74/789,891.38 = 317,744.88/x
  3. Step 3: Cross multiply
    572,413.74x = 789,891.38 × 317,744.88
  4. Step 4: Simplify right side
    572,413.74x = 250,983,940,162.41
  5. Step 5: Solve for x
    x = 250,983,940,162.41/572,413.74
  6. Step 6: Final answer
    x = 438,465.96

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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.