Home / 856,497.80-1,283,412.30-323,728.20

Finding the Fourth Proportional to 856,497.80, 1,283,412.30 and 323,728.20

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Solution

The fourth proportional to 856,497.80, 1,283,412.30 and 323,728.20 is: 485,087.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,497.80 : 1,283,412.30 = 323,728.20 : x
  2. Step 2: Convert to fraction form
    856,497.80/1,283,412.30 = 323,728.20/x
  3. Step 3: Cross multiply
    856,497.80x = 1,283,412.30 × 323,728.20
  4. Step 4: Simplify right side
    856,497.80x = 415,476,753,736.86
  5. Step 5: Solve for x
    x = 415,476,753,736.86/856,497.80
  6. Step 6: Final answer
    x = 485,087.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.