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Finding the Fourth Proportional to 571,440.05, 857,028.89 and 340,694.32

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Solution

The fourth proportional to 571,440.05, 857,028.89 and 340,694.32 is: 510,963.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,440.05 : 857,028.89 = 340,694.32 : x
  2. Step 2: Convert to fraction form
    571,440.05/857,028.89 = 340,694.32/x
  3. Step 3: Cross multiply
    571,440.05x = 857,028.89 × 340,694.32
  4. Step 4: Simplify right side
    571,440.05x = 291,984,874,898.91
  5. Step 5: Solve for x
    x = 291,984,874,898.91/571,440.05
  6. Step 6: Final answer
    x = 510,963.27

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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.