Home / 667,323.30-1,000,509.38-312,143.70

Finding the Fourth Proportional to 667,323.30, 1,000,509.38 and 312,143.70

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Solution

The fourth proportional to 667,323.30, 1,000,509.38 and 312,143.70 is: 467,993.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,323.30 : 1,000,509.38 = 312,143.70 : x
  2. Step 2: Convert to fraction form
    667,323.30/1,000,509.38 = 312,143.70/x
  3. Step 3: Cross multiply
    667,323.30x = 1,000,509.38 × 312,143.70
  4. Step 4: Simplify right side
    667,323.30x = 312,302,699,757.91
  5. Step 5: Solve for x
    x = 312,302,699,757.91/667,323.30
  6. Step 6: Final answer
    x = 467,993.10

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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.