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Finding the Fourth Proportional to 606,989.70, 910,484.55 and 394,413.30

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Solution

The fourth proportional to 606,989.70, 910,484.55 and 394,413.30 is: 591,619.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,989.70 : 910,484.55 = 394,413.30 : x
  2. Step 2: Convert to fraction form
    606,989.70/910,484.55 = 394,413.30/x
  3. Step 3: Cross multiply
    606,989.70x = 910,484.55 × 394,413.30
  4. Step 4: Simplify right side
    606,989.70x = 359,107,215,964.52
  5. Step 5: Solve for x
    x = 359,107,215,964.52/606,989.70
  6. Step 6: Final answer
    x = 591,619.95

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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.