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Finding the Third Proportional to 721,141 and 1,121,043

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Solution

The third proportional to 721,141 and 1,121,043 is: 1,742,706.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,141 : 1,121,043 = 1,121,043 : x
  2. Step 2: Convert to fraction form
    721,141/1,121,043 = 1,121,043/x
  3. Step 3: Cross multiply
    721,141x = 1,121,043 × 1,121,043
  4. Step 4: Simplify right side
    721,141x = 1,256,737,407,849
  5. Step 5: Solve for x
    x = 1,256,737,407,849/721,141
  6. Step 6: Final answer
    x = 1,742,706.92

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.