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Finding the Fourth Proportional to 554,413.14, 764,915.49 and 339,328.98

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Solution

The fourth proportional to 554,413.14, 764,915.49 and 339,328.98 is: 468,167.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,413.14 : 764,915.49 = 339,328.98 : x
  2. Step 2: Convert to fraction form
    554,413.14/764,915.49 = 339,328.98/x
  3. Step 3: Cross multiply
    554,413.14x = 764,915.49 × 339,328.98
  4. Step 4: Simplify right side
    554,413.14x = 259,557,993,007.90
  5. Step 5: Solve for x
    x = 259,557,993,007.90/554,413.14
  6. Step 6: Final answer
    x = 468,167.10

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1.5x scale

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.