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Finding the Third Proportional to 5,218,030 and 7,210,145

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Solution

The third proportional to 5,218,030 and 7,210,145 is: 9,962,800.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,218,030 : 7,210,145 = 7,210,145 : x
  2. Step 2: Convert to fraction form
    5,218,030/7,210,145 = 7,210,145/x
  3. Step 3: Cross multiply
    5,218,030x = 7,210,145 × 7,210,145
  4. Step 4: Simplify right side
    5,218,030x = 51,986,190,921,025
  5. Step 5: Solve for x
    x = 51,986,190,921,025/5,218,030
  6. Step 6: Final answer
    x = 9,962,800.31

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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.