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Finding the Fourth Proportional to 613,905.90, 920,634.33 and 234,639.09

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Solution

The fourth proportional to 613,905.90, 920,634.33 and 234,639.09 is: 351,872.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,905.90 : 920,634.33 = 234,639.09 : x
  2. Step 2: Convert to fraction form
    613,905.90/920,634.33 = 234,639.09/x
  3. Step 3: Cross multiply
    613,905.90x = 920,634.33 × 234,639.09
  4. Step 4: Simplify right side
    613,905.90x = 216,016,801,413.96
  5. Step 5: Solve for x
    x = 216,016,801,413.96/613,905.90
  6. Step 6: Final answer
    x = 351,872.82

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1.5x scale

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.