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Finding the Fourth Proportional to 1,934,413.80, 2,900,745.90 and 868,907.40

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Solution

The fourth proportional to 1,934,413.80, 2,900,745.90 and 868,907.40 is: 1,302,968.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,934,413.80 : 2,900,745.90 = 868,907.40 : x
  2. Step 2: Convert to fraction form
    1,934,413.80/2,900,745.90 = 868,907.40/x
  3. Step 3: Cross multiply
    1,934,413.80x = 2,900,745.90 × 868,907.40
  4. Step 4: Simplify right side
    1,934,413.80x = 2,520,479,578,029.66
  5. Step 5: Solve for x
    x = 2,520,479,578,029.66/1,934,413.80
  6. Step 6: Final answer
    x = 1,302,968.15

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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.