Home / 538,727.55-743,443.79-309,299.64

Finding the Fourth Proportional to 538,727.55, 743,443.79 and 309,299.64

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Solution

The fourth proportional to 538,727.55, 743,443.79 and 309,299.64 is: 426,833.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,727.55 : 743,443.79 = 309,299.64 : x
  2. Step 2: Convert to fraction form
    538,727.55/743,443.79 = 309,299.64/x
  3. Step 3: Cross multiply
    538,727.55x = 743,443.79 × 309,299.64
  4. Step 4: Simplify right side
    538,727.55x = 229,946,895,060.74
  5. Step 5: Solve for x
    x = 229,946,895,060.74/538,727.55
  6. Step 6: Final answer
    x = 426,833.37

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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.