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Finding the Third Proportional to 405,931.50 and 576,996.75

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Solution

The third proportional to 405,931.50 and 576,996.75 is: 820,151.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,931.50 : 576,996.75 = 576,996.75 : x
  2. Step 2: Convert to fraction form
    405,931.50/576,996.75 = 576,996.75/x
  3. Step 3: Cross multiply
    405,931.50x = 576,996.75 × 576,996.75
  4. Step 4: Simplify right side
    405,931.50x = 332,925,249,510.56
  5. Step 5: Solve for x
    x = 332,925,249,510.56/405,931.50
  6. Step 6: Final answer
    x = 820,151.31

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.