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Finding the Third Proportional to 603,428.50 and 831,228.50

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Solution

The third proportional to 603,428.50 and 831,228.50 is: 1,145,025.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,428.50 : 831,228.50 = 831,228.50 : x
  2. Step 2: Convert to fraction form
    603,428.50/831,228.50 = 831,228.50/x
  3. Step 3: Cross multiply
    603,428.50x = 831,228.50 × 831,228.50
  4. Step 4: Simplify right side
    603,428.50x = 690,940,819,212.25
  5. Step 5: Solve for x
    x = 690,940,819,212.25/603,428.50
  6. Step 6: Final answer
    x = 1,145,025.17

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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.