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Finding the Fourth Proportional to 664,634.70, 996,952.05 and 613,313.10

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Solution

The fourth proportional to 664,634.70, 996,952.05 and 613,313.10 is: 919,969.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,634.70 : 996,952.05 = 613,313.10 : x
  2. Step 2: Convert to fraction form
    664,634.70/996,952.05 = 613,313.10/x
  3. Step 3: Cross multiply
    664,634.70x = 996,952.05 × 613,313.10
  4. Step 4: Simplify right side
    664,634.70x = 611,443,752,336.86
  5. Step 5: Solve for x
    x = 611,443,752,336.86/664,634.70
  6. Step 6: Final answer
    x = 919,969.65

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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.