Home / 538,918.24-743,682.14-309,313.92

Finding the Fourth Proportional to 538,918.24, 743,682.14 and 309,313.92

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Solution

The fourth proportional to 538,918.24, 743,682.14 and 309,313.92 is: 426,838.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,918.24 : 743,682.14 = 309,313.92 : x
  2. Step 2: Convert to fraction form
    538,918.24/743,682.14 = 309,313.92/x
  3. Step 3: Cross multiply
    538,918.24x = 743,682.14 × 309,313.92
  4. Step 4: Simplify right side
    538,918.24x = 230,031,242,099.45
  5. Step 5: Solve for x
    x = 230,031,242,099.45/538,918.24
  6. Step 6: Final answer
    x = 426,838.85

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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.