Home / 538,946.58-743,721.06-309,344.38

Finding the Fourth Proportional to 538,946.58, 743,721.06 and 309,344.38

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Solution

The fourth proportional to 538,946.58, 743,721.06 and 309,344.38 is: 426,880.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,946.58 : 743,721.06 = 309,344.38 : x
  2. Step 2: Convert to fraction form
    538,946.58/743,721.06 = 309,344.38/x
  3. Step 3: Cross multiply
    538,946.58x = 743,721.06 × 309,344.38
  4. Step 4: Simplify right side
    538,946.58x = 230,065,930,198.64
  5. Step 5: Solve for x
    x = 230,065,930,198.64/538,946.58
  6. Step 6: Final answer
    x = 426,880.77

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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.