Home / 664,461.20-996,983.40-309,292.40

Finding the Fourth Proportional to 664,461.20, 996,983.40 and 309,292.40

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Solution

The fourth proportional to 664,461.20, 996,983.40 and 309,292.40 is: 464,074.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,461.20 : 996,983.40 = 309,292.40 : x
  2. Step 2: Convert to fraction form
    664,461.20/996,983.40 = 309,292.40/x
  3. Step 3: Cross multiply
    664,461.20x = 996,983.40 × 309,292.40
  4. Step 4: Simplify right side
    664,461.20x = 308,359,388,546.16
  5. Step 5: Solve for x
    x = 308,359,388,546.16/664,461.20
  6. Step 6: Final answer
    x = 464,074.33

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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.