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Finding the Third Proportional to 603,423 and 831,220.50

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Solution

The third proportional to 603,423 and 831,220.50 is: 1,145,013.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,423 : 831,220.50 = 831,220.50 : x
  2. Step 2: Convert to fraction form
    603,423/831,220.50 = 831,220.50/x
  3. Step 3: Cross multiply
    603,423x = 831,220.50 × 831,220.50
  4. Step 4: Simplify right side
    603,423x = 690,927,519,620.25
  5. Step 5: Solve for x
    x = 690,927,519,620.25/603,423
  6. Step 6: Final answer
    x = 1,145,013.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.