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Finding the Fourth Proportional to 906,401.10, 1,359,601.65 and 850,413.90

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Solution

The fourth proportional to 906,401.10, 1,359,601.65 and 850,413.90 is: 1,275,620.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    906,401.10 : 1,359,601.65 = 850,413.90 : x
  2. Step 2: Convert to fraction form
    906,401.10/1,359,601.65 = 850,413.90/x
  3. Step 3: Cross multiply
    906,401.10x = 1,359,601.65 × 850,413.90
  4. Step 4: Simplify right side
    906,401.10x = 1,156,224,141,622.94
  5. Step 5: Solve for x
    x = 1,156,224,141,622.94/906,401.10
  6. Step 6: Final answer
    x = 1,275,620.85

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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.