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Finding the Third Proportional to 438,313.50 and 655,704

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Solution

The third proportional to 438,313.50 and 655,704 is: 980,913.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,313.50 : 655,704 = 655,704 : x
  2. Step 2: Convert to fraction form
    438,313.50/655,704 = 655,704/x
  3. Step 3: Cross multiply
    438,313.50x = 655,704 × 655,704
  4. Step 4: Simplify right side
    438,313.50x = 429,947,735,616
  5. Step 5: Solve for x
    x = 429,947,735,616/438,313.50
  6. Step 6: Final answer
    x = 980,913.74

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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.