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Finding the Third Proportional to 389,705,939 and 848,015,821

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Solution

The third proportional to 389,705,939 and 848,015,821 is: 1,845,316,585.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,705,939 : 848,015,821 = 848,015,821 : x
  2. Step 2: Convert to fraction form
    389,705,939/848,015,821 = 848,015,821/x
  3. Step 3: Cross multiply
    389,705,939x = 848,015,821 × 848,015,821
  4. Step 4: Simplify right side
    389,705,939x = 719,130,832,666,304,000
  5. Step 5: Solve for x
    x = 719,130,832,666,304,000/389,705,939
  6. Step 6: Final answer
    x = 1,845,316,585.40

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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.