Home / 718,274.63-991,215.42-395,983.73

Finding the Fourth Proportional to 718,274.63, 991,215.42 and 395,983.73

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Solution

The fourth proportional to 718,274.63, 991,215.42 and 395,983.73 is: 546,455.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,274.63 : 991,215.42 = 395,983.73 : x
  2. Step 2: Convert to fraction form
    718,274.63/991,215.42 = 395,983.73/x
  3. Step 3: Cross multiply
    718,274.63x = 991,215.42 × 395,983.73
  4. Step 4: Simplify right side
    718,274.63x = 392,505,179,245.12
  5. Step 5: Solve for x
    x = 392,505,179,245.12/718,274.63
  6. Step 6: Final answer
    x = 546,455.58

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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.