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Finding the Fourth Proportional to 619,620.91, 855,007.45 and 347,632.23

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Solution

The fourth proportional to 619,620.91, 855,007.45 and 347,632.23 is: 479,693.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,620.91 : 855,007.45 = 347,632.23 : x
  2. Step 2: Convert to fraction form
    619,620.91/855,007.45 = 347,632.23/x
  3. Step 3: Cross multiply
    619,620.91x = 855,007.45 × 347,632.23
  4. Step 4: Simplify right side
    619,620.91x = 297,228,146,510.11
  5. Step 5: Solve for x
    x = 297,228,146,510.11/619,620.91
  6. Step 6: Final answer
    x = 479,693.54

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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.