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Finding the Third Proportional to 721,504,877.63 and 1,115,390,432.25

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Solution

The third proportional to 721,504,877.63 and 1,115,390,432.25 is: 1,724,306,868.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,504,877.63 : 1,115,390,432.25 = 1,115,390,432.25 : x
  2. Step 2: Convert to fraction form
    721,504,877.63/1,115,390,432.25 = 1,115,390,432.25/x
  3. Step 3: Cross multiply
    721,504,877.63x = 1,115,390,432.25 × 1,115,390,432.25
  4. Step 4: Simplify right side
    721,504,877.63x = 1,244,095,816,354,841,856
  5. Step 5: Solve for x
    x = 1,244,095,816,354,841,856/721,504,877.63
  6. Step 6: Final answer
    x = 1,724,306,868.79

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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.