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Finding the Fourth Proportional to 664,760.95, 997,204.12 and 515,168.78

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Solution

The fourth proportional to 664,760.95, 997,204.12 and 515,168.78 is: 772,801.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,760.95 : 997,204.12 = 515,168.78 : x
  2. Step 2: Convert to fraction form
    664,760.95/997,204.12 = 515,168.78/x
  3. Step 3: Cross multiply
    664,760.95x = 997,204.12 × 515,168.78
  4. Step 4: Simplify right side
    664,760.95x = 513,728,429,911.37
  5. Step 5: Solve for x
    x = 513,728,429,911.37/664,760.95
  6. Step 6: Final answer
    x = 772,801.76

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1.5x scale

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.