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Finding the Fourth Proportional to 664,994.80, 997,621.80 and 265,567.60

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Solution

The fourth proportional to 664,994.80, 997,621.80 and 265,567.60 is: 398,403.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,994.80 : 997,621.80 = 265,567.60 : x
  2. Step 2: Convert to fraction form
    664,994.80/997,621.80 = 265,567.60/x
  3. Step 3: Cross multiply
    664,994.80x = 997,621.80 × 265,567.60
  4. Step 4: Simplify right side
    664,994.80x = 264,936,027,133.68
  5. Step 5: Solve for x
    x = 264,936,027,133.68/664,994.80
  6. Step 6: Final answer
    x = 398,403.16

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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.