Home / 538,472.05-743,126.50-309,103.59

Finding the Fourth Proportional to 538,472.05, 743,126.50 and 309,103.59

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Solution

The fourth proportional to 538,472.05, 743,126.50 and 309,103.59 is: 426,583.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,472.05 : 743,126.50 = 309,103.59 : x
  2. Step 2: Convert to fraction form
    538,472.05/743,126.50 = 309,103.59/x
  3. Step 3: Cross multiply
    538,472.05x = 743,126.50 × 309,103.59
  4. Step 4: Simplify right side
    538,472.05x = 229,703,072,147.24
  5. Step 5: Solve for x
    x = 229,703,072,147.24/538,472.05
  6. Step 6: Final answer
    x = 426,583.09

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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.