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Finding the Fourth Proportional to 664,993.80, 997,620.30 and 265,566.60

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Solution

The fourth proportional to 664,993.80, 997,620.30 and 265,566.60 is: 398,401.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,993.80 : 997,620.30 = 265,566.60 : x
  2. Step 2: Convert to fraction form
    664,993.80/997,620.30 = 265,566.60/x
  3. Step 3: Cross multiply
    664,993.80x = 997,620.30 × 265,566.60
  4. Step 4: Simplify right side
    664,993.80x = 264,934,631,161.98
  5. Step 5: Solve for x
    x = 264,934,631,161.98/664,993.80
  6. Step 6: Final answer
    x = 398,401.66

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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.