Home / 538,922.73-743,688.36-309,318.42

Finding the Fourth Proportional to 538,922.73, 743,688.36 and 309,318.42

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Solution

The fourth proportional to 538,922.73, 743,688.36 and 309,318.42 is: 426,845.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,922.73 : 743,688.36 = 309,318.42 : x
  2. Step 2: Convert to fraction form
    538,922.73/743,688.36 = 309,318.42/x
  3. Step 3: Cross multiply
    538,922.73x = 743,688.36 × 309,318.42
  4. Step 4: Simplify right side
    538,922.73x = 230,036,508,487.59
  5. Step 5: Solve for x
    x = 230,036,508,487.59/538,922.73
  6. Step 6: Final answer
    x = 426,845.07

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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.