Home / 538,475.09-743,086.73-309,022.97

Finding the Fourth Proportional to 538,475.09, 743,086.73 and 309,022.97

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Solution

The fourth proportional to 538,475.09, 743,086.73 and 309,022.97 is: 426,446.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,475.09 : 743,086.73 = 309,022.97 : x
  2. Step 2: Convert to fraction form
    538,475.09/743,086.73 = 309,022.97/x
  3. Step 3: Cross multiply
    538,475.09x = 743,086.73 × 309,022.97
  4. Step 4: Simplify right side
    538,475.09x = 229,630,865,329.31
  5. Step 5: Solve for x
    x = 229,630,865,329.31/538,475.09
  6. Step 6: Final answer
    x = 426,446.59

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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.