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Finding the Fourth Proportional to 521,544.16, 719,843.25 and 317,662.30

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Solution

The fourth proportional to 521,544.16, 719,843.25 and 317,662.30 is: 438,442.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,544.16 : 719,843.25 = 317,662.30 : x
  2. Step 2: Convert to fraction form
    521,544.16/719,843.25 = 317,662.30/x
  3. Step 3: Cross multiply
    521,544.16x = 719,843.25 × 317,662.30
  4. Step 4: Simplify right side
    521,544.16x = 228,667,062,434.48
  5. Step 5: Solve for x
    x = 228,667,062,434.48/521,544.16
  6. Step 6: Final answer
    x = 438,442.38

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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.