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Finding the Third Proportional to 637,154 and 1,390,220

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Solution

The third proportional to 637,154 and 1,390,220 is: 3,033,350.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,154 : 1,390,220 = 1,390,220 : x
  2. Step 2: Convert to fraction form
    637,154/1,390,220 = 1,390,220/x
  3. Step 3: Cross multiply
    637,154x = 1,390,220 × 1,390,220
  4. Step 4: Simplify right side
    637,154x = 1,932,711,648,400
  5. Step 5: Solve for x
    x = 1,932,711,648,400/637,154
  6. Step 6: Final answer
    x = 3,033,350.88

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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.