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Finding the Fourth Proportional to 619,329.37, 854,672.77 and 343,728.82

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Solution

The fourth proportional to 619,329.37, 854,672.77 and 343,728.82 is: 474,344.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,329.37 : 854,672.77 = 343,728.82 : x
  2. Step 2: Convert to fraction form
    619,329.37/854,672.77 = 343,728.82/x
  3. Step 3: Cross multiply
    619,329.37x = 854,672.77 × 343,728.82
  4. Step 4: Simplify right side
    619,329.37x = 293,775,657,475.22
  5. Step 5: Solve for x
    x = 293,775,657,475.22/619,329.37
  6. Step 6: Final answer
    x = 474,344.79

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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.