Home / 856,538.90-1,284,370.94-316,767.86

Finding the Fourth Proportional to 856,538.90, 1,284,370.94 and 316,767.86

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Solution

The fourth proportional to 856,538.90, 1,284,370.94 and 316,767.86 is: 474,990.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,538.90 : 1,284,370.94 = 316,767.86 : x
  2. Step 2: Convert to fraction form
    856,538.90/1,284,370.94 = 316,767.86/x
  3. Step 3: Cross multiply
    856,538.90x = 1,284,370.94 × 316,767.86
  4. Step 4: Simplify right side
    856,538.90x = 406,847,434,109.99
  5. Step 5: Solve for x
    x = 406,847,434,109.99/856,538.90
  6. Step 6: Final answer
    x = 474,990.03

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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.