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Finding the Third Proportional to 720,390 and 1,567,628

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Solution

The third proportional to 720,390 and 1,567,628 is: 3,411,287.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,390 : 1,567,628 = 1,567,628 : x
  2. Step 2: Convert to fraction form
    720,390/1,567,628 = 1,567,628/x
  3. Step 3: Cross multiply
    720,390x = 1,567,628 × 1,567,628
  4. Step 4: Simplify right side
    720,390x = 2,457,457,546,384
  5. Step 5: Solve for x
    x = 2,457,457,546,384/720,390
  6. Step 6: Final answer
    x = 3,411,287.70

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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.