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Finding the Third Proportional to 638,737.50 and 1,390,875

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Solution

The third proportional to 638,737.50 and 1,390,875 is: 3,028,682.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,737.50 : 1,390,875 = 1,390,875 : x
  2. Step 2: Convert to fraction form
    638,737.50/1,390,875 = 1,390,875/x
  3. Step 3: Cross multiply
    638,737.50x = 1,390,875 × 1,390,875
  4. Step 4: Simplify right side
    638,737.50x = 1,934,533,265,625
  5. Step 5: Solve for x
    x = 1,934,533,265,625/638,737.50
  6. Step 6: Final answer
    x = 3,028,682.78

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.