Home / 538,973.58-743,828.23-309,575.14

Finding the Fourth Proportional to 538,973.58, 743,828.23 and 309,575.14

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Solution

The fourth proportional to 538,973.58, 743,828.23 and 309,575.14 is: 427,239.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,973.58 : 743,828.23 = 309,575.14 : x
  2. Step 2: Convert to fraction form
    538,973.58/743,828.23 = 309,575.14/x
  3. Step 3: Cross multiply
    538,973.58x = 743,828.23 × 309,575.14
  4. Step 4: Simplify right side
    538,973.58x = 230,270,728,438.20
  5. Step 5: Solve for x
    x = 230,270,728,438.20/538,973.58
  6. Step 6: Final answer
    x = 427,239.36

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Double scale
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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.