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Finding the Third Proportional to 315,270 and 700,515

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Solution

The third proportional to 315,270 and 700,515 is: 1,556,511.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,270 : 700,515 = 700,515 : x
  2. Step 2: Convert to fraction form
    315,270/700,515 = 700,515/x
  3. Step 3: Cross multiply
    315,270x = 700,515 × 700,515
  4. Step 4: Simplify right side
    315,270x = 490,721,265,225
  5. Step 5: Solve for x
    x = 490,721,265,225/315,270
  6. Step 6: Final answer
    x = 1,556,511.13

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.