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Finding the Third Proportional to 719,780 and 1,575,155

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Solution

The third proportional to 719,780 and 1,575,155 is: 3,447,043.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,780 : 1,575,155 = 1,575,155 : x
  2. Step 2: Convert to fraction form
    719,780/1,575,155 = 1,575,155/x
  3. Step 3: Cross multiply
    719,780x = 1,575,155 × 1,575,155
  4. Step 4: Simplify right side
    719,780x = 2,481,113,274,025
  5. Step 5: Solve for x
    x = 2,481,113,274,025/719,780
  6. Step 6: Final answer
    x = 3,447,043.92

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.