Home / 664,962.02-916,921.96-449,728.42

Finding the Fourth Proportional to 664,962.02, 916,921.96 and 449,728.42

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Solution

The fourth proportional to 664,962.02, 916,921.96 and 449,728.42 is: 620,134.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,962.02 : 916,921.96 = 449,728.42 : x
  2. Step 2: Convert to fraction form
    664,962.02/916,921.96 = 449,728.42/x
  3. Step 3: Cross multiply
    664,962.02x = 916,921.96 × 449,728.42
  4. Step 4: Simplify right side
    664,962.02x = 412,365,860,665.73
  5. Step 5: Solve for x
    x = 412,365,860,665.73/664,962.02
  6. Step 6: Final answer
    x = 620,134.46

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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.