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Finding the Fourth Proportional to 447,249.59, 615,646.24 and 389,790.13

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Solution

The fourth proportional to 447,249.59, 615,646.24 and 389,790.13 is: 536,552.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,249.59 : 615,646.24 = 389,790.13 : x
  2. Step 2: Convert to fraction form
    447,249.59/615,646.24 = 389,790.13/x
  3. Step 3: Cross multiply
    447,249.59x = 615,646.24 × 389,790.13
  4. Step 4: Simplify right side
    447,249.59x = 239,972,825,410.02
  5. Step 5: Solve for x
    x = 239,972,825,410.02/447,249.59
  6. Step 6: Final answer
    x = 536,552.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.