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Finding the Fourth Proportional to 613,993.32, 921,088.42 and 259,059.62

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Solution

The fourth proportional to 613,993.32, 921,088.42 and 259,059.62 is: 388,630.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,993.32 : 921,088.42 = 259,059.62 : x
  2. Step 2: Convert to fraction form
    613,993.32/921,088.42 = 259,059.62/x
  3. Step 3: Cross multiply
    613,993.32x = 921,088.42 × 259,059.62
  4. Step 4: Simplify right side
    613,993.32x = 238,616,816,071.60
  5. Step 5: Solve for x
    x = 238,616,816,071.60/613,993.32
  6. Step 6: Final answer
    x = 388,630.96

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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.