Home / 667,047.47-1,000,268.64-287,788.86

Finding the Fourth Proportional to 667,047.47, 1,000,268.64 and 287,788.86

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Solution

The fourth proportional to 667,047.47, 1,000,268.64 and 287,788.86 is: 431,552.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,047.47 : 1,000,268.64 = 287,788.86 : x
  2. Step 2: Convert to fraction form
    667,047.47/1,000,268.64 = 287,788.86/x
  3. Step 3: Cross multiply
    667,047.47x = 1,000,268.64 × 287,788.86
  4. Step 4: Simplify right side
    667,047.47x = 287,866,171,599.35
  5. Step 5: Solve for x
    x = 287,866,171,599.35/667,047.47
  6. Step 6: Final answer
    x = 431,552.76

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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.