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Finding the Fourth Proportional to 664,971.60, 997,165.80 and 265,479.60

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Solution

The fourth proportional to 664,971.60, 997,165.80 and 265,479.60 is: 398,102.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,971.60 : 997,165.80 = 265,479.60 : x
  2. Step 2: Convert to fraction form
    664,971.60/997,165.80 = 265,479.60/x
  3. Step 3: Cross multiply
    664,971.60x = 997,165.80 × 265,479.60
  4. Step 4: Simplify right side
    664,971.60x = 264,727,177,717.68
  5. Step 5: Solve for x
    x = 264,727,177,717.68/664,971.60
  6. Step 6: Final answer
    x = 398,102.98

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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.