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Finding the Fourth Proportional to 664,517, 996,766.10 and 309,332.36

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Solution

The fourth proportional to 664,517, 996,766.10 and 309,332.36 is: 463,994.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,517 : 996,766.10 = 309,332.36 : x
  2. Step 2: Convert to fraction form
    664,517/996,766.10 = 309,332.36/x
  3. Step 3: Cross multiply
    664,517x = 996,766.10 × 309,332.36
  4. Step 4: Simplify right side
    664,517x = 308,332,010,081.00
  5. Step 5: Solve for x
    x = 308,332,010,081.00/664,517
  6. Step 6: Final answer
    x = 463,994.16

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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.