Home / 856,091.28-1,284,221.88-316,489

Finding the Fourth Proportional to 856,091.28, 1,284,221.88 and 316,489

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Solution

The fourth proportional to 856,091.28, 1,284,221.88 and 316,489 is: 474,764.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,091.28 : 1,284,221.88 = 316,489 : x
  2. Step 2: Convert to fraction form
    856,091.28/1,284,221.88 = 316,489/x
  3. Step 3: Cross multiply
    856,091.28x = 1,284,221.88 × 316,489
  4. Step 4: Simplify right side
    856,091.28x = 406,442,098,579.32
  5. Step 5: Solve for x
    x = 406,442,098,579.32/856,091.28
  6. Step 6: Final answer
    x = 474,764.91

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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.