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Finding the Third Proportional to 684,138 and 1,073,205

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Solution

The third proportional to 684,138 and 1,073,205 is: 1,683,533.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,138 : 1,073,205 = 1,073,205 : x
  2. Step 2: Convert to fraction form
    684,138/1,073,205 = 1,073,205/x
  3. Step 3: Cross multiply
    684,138x = 1,073,205 × 1,073,205
  4. Step 4: Simplify right side
    684,138x = 1,151,768,972,025
  5. Step 5: Solve for x
    x = 1,151,768,972,025/684,138
  6. Step 6: Final answer
    x = 1,683,533.11

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.