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Finding the Third Proportional to 666,420.50 and 1,439,030

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Solution

The third proportional to 666,420.50 and 1,439,030 is: 3,107,358.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,420.50 : 1,439,030 = 1,439,030 : x
  2. Step 2: Convert to fraction form
    666,420.50/1,439,030 = 1,439,030/x
  3. Step 3: Cross multiply
    666,420.50x = 1,439,030 × 1,439,030
  4. Step 4: Simplify right side
    666,420.50x = 2,070,807,340,900
  5. Step 5: Solve for x
    x = 2,070,807,340,900/666,420.50
  6. Step 6: Final answer
    x = 3,107,358.40

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.