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Finding the Fourth Proportional to 664,997.30, 997,625.55 and 265,570.10

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Solution

The fourth proportional to 664,997.30, 997,625.55 and 265,570.10 is: 398,406.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,997.30 : 997,625.55 = 265,570.10 : x
  2. Step 2: Convert to fraction form
    664,997.30/997,625.55 = 265,570.10/x
  3. Step 3: Cross multiply
    664,997.30x = 997,625.55 × 265,570.10
  4. Step 4: Simplify right side
    664,997.30x = 264,939,517,076.06
  5. Step 5: Solve for x
    x = 264,939,517,076.06/664,997.30
  6. Step 6: Final answer
    x = 398,406.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.