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Finding the Third Proportional to 721,140 and 1,556,521

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Solution

The third proportional to 721,140 and 1,556,521 is: 3,359,621.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,140 : 1,556,521 = 1,556,521 : x
  2. Step 2: Convert to fraction form
    721,140/1,556,521 = 1,556,521/x
  3. Step 3: Cross multiply
    721,140x = 1,556,521 × 1,556,521
  4. Step 4: Simplify right side
    721,140x = 2,422,757,623,441
  5. Step 5: Solve for x
    x = 2,422,757,623,441/721,140
  6. Step 6: Final answer
    x = 3,359,621.74

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