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Finding the Fourth Proportional to 613,489.72, 919,807.66 and 271,747.62

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Solution

The fourth proportional to 613,489.72, 919,807.66 and 271,747.62 is: 407,432.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,489.72 : 919,807.66 = 271,747.62 : x
  2. Step 2: Convert to fraction form
    613,489.72/919,807.66 = 271,747.62/x
  3. Step 3: Cross multiply
    613,489.72x = 919,807.66 × 271,747.62
  4. Step 4: Simplify right side
    613,489.72x = 249,955,542,462.77
  5. Step 5: Solve for x
    x = 249,955,542,462.77/613,489.72
  6. Step 6: Final answer
    x = 407,432.32

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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.