Home / 521,103.26-718,551.44-339,478.38

Finding the Fourth Proportional to 521,103.26, 718,551.44 and 339,478.38

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Solution

The fourth proportional to 521,103.26, 718,551.44 and 339,478.38 is: 468,108.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,103.26 : 718,551.44 = 339,478.38 : x
  2. Step 2: Convert to fraction form
    521,103.26/718,551.44 = 339,478.38/x
  3. Step 3: Cross multiply
    521,103.26x = 718,551.44 × 339,478.38
  4. Step 4: Simplify right side
    521,103.26x = 243,932,675,629.46
  5. Step 5: Solve for x
    x = 243,932,675,629.46/521,103.26
  6. Step 6: Final answer
    x = 468,108.14

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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.