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Finding the Fourth Proportional to 679,578.18, 937,797.90 and 373,654.98

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Solution

The fourth proportional to 679,578.18, 937,797.90 and 373,654.98 is: 515,632.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,578.18 : 937,797.90 = 373,654.98 : x
  2. Step 2: Convert to fraction form
    679,578.18/937,797.90 = 373,654.98/x
  3. Step 3: Cross multiply
    679,578.18x = 937,797.90 × 373,654.98
  4. Step 4: Simplify right side
    679,578.18x = 350,412,855,568.54
  5. Step 5: Solve for x
    x = 350,412,855,568.54/679,578.18
  6. Step 6: Final answer
    x = 515,632.88

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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.