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Finding the Fourth Proportional to 619,782.82, 855,264.36 and 347,825.32

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Solution

The fourth proportional to 619,782.82, 855,264.36 and 347,825.32 is: 479,978.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,782.82 : 855,264.36 = 347,825.32 : x
  2. Step 2: Convert to fraction form
    619,782.82/855,264.36 = 347,825.32/x
  3. Step 3: Cross multiply
    619,782.82x = 855,264.36 × 347,825.32
  4. Step 4: Simplify right side
    619,782.82x = 297,482,599,701.60
  5. Step 5: Solve for x
    x = 297,482,599,701.60/619,782.82
  6. Step 6: Final answer
    x = 479,978.78

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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.