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Finding the Fourth Proportional to 611,088.54, 843,289.50 and 339,140.64

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Solution

The fourth proportional to 611,088.54, 843,289.50 and 339,140.64 is: 468,007.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,088.54 : 843,289.50 = 339,140.64 : x
  2. Step 2: Convert to fraction form
    611,088.54/843,289.50 = 339,140.64/x
  3. Step 3: Cross multiply
    611,088.54x = 843,289.50 × 339,140.64
  4. Step 4: Simplify right side
    611,088.54x = 285,993,740,735.28
  5. Step 5: Solve for x
    x = 285,993,740,735.28/611,088.54
  6. Step 6: Final answer
    x = 468,007.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.