Home / 664,588.20-996,882.30-309,638.10

Finding the Fourth Proportional to 664,588.20, 996,882.30 and 309,638.10

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Solution

The fourth proportional to 664,588.20, 996,882.30 and 309,638.10 is: 464,457.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,588.20 : 996,882.30 = 309,638.10 : x
  2. Step 2: Convert to fraction form
    664,588.20/996,882.30 = 309,638.10/x
  3. Step 3: Cross multiply
    664,588.20x = 996,882.30 × 309,638.10
  4. Step 4: Simplify right side
    664,588.20x = 308,672,741,295.63
  5. Step 5: Solve for x
    x = 308,672,741,295.63/664,588.20
  6. Step 6: Final answer
    x = 464,457.15

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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.