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Finding the Fourth Proportional to 443,268.80, 664,903.20 and 409,054.40

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Solution

The fourth proportional to 443,268.80, 664,903.20 and 409,054.40 is: 613,581.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,268.80 : 664,903.20 = 409,054.40 : x
  2. Step 2: Convert to fraction form
    443,268.80/664,903.20 = 409,054.40/x
  3. Step 3: Cross multiply
    443,268.80x = 664,903.20 × 409,054.40
  4. Step 4: Simplify right side
    443,268.80x = 271,981,579,534.08
  5. Step 5: Solve for x
    x = 271,981,579,534.08/443,268.80
  6. Step 6: Final answer
    x = 613,581.60

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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.