Home / 667,320.30-1,000,504.89-312,140.70

Finding the Fourth Proportional to 667,320.30, 1,000,504.89 and 312,140.70

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Solution

The fourth proportional to 667,320.30, 1,000,504.89 and 312,140.70 is: 467,988.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,320.30 : 1,000,504.89 = 312,140.70 : x
  2. Step 2: Convert to fraction form
    667,320.30/1,000,504.89 = 312,140.70/x
  3. Step 3: Cross multiply
    667,320.30x = 1,000,504.89 × 312,140.70
  4. Step 4: Simplify right side
    667,320.30x = 312,298,296,718.02
  5. Step 5: Solve for x
    x = 312,298,296,718.02/667,320.30
  6. Step 6: Final answer
    x = 467,988.61

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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.