Home / 667,086.12-1,000,325.43-287,827.20

Finding the Fourth Proportional to 667,086.12, 1,000,325.43 and 287,827.20

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Solution

The fourth proportional to 667,086.12, 1,000,325.43 and 287,827.20 is: 431,609.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,086.12 : 1,000,325.43 = 287,827.20 : x
  2. Step 2: Convert to fraction form
    667,086.12/1,000,325.43 = 287,827.20/x
  3. Step 3: Cross multiply
    667,086.12x = 1,000,325.43 × 287,827.20
  4. Step 4: Simplify right side
    667,086.12x = 287,920,867,605.70
  5. Step 5: Solve for x
    x = 287,920,867,605.70/667,086.12
  6. Step 6: Final answer
    x = 431,609.74

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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.