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Finding the Third Proportional to 380,640,988 and 605,674,641

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Solution

The third proportional to 380,640,988 and 605,674,641 is: 963,747,421.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,640,988 : 605,674,641 = 605,674,641 : x
  2. Step 2: Convert to fraction form
    380,640,988/605,674,641 = 605,674,641/x
  3. Step 3: Cross multiply
    380,640,988x = 605,674,641 × 605,674,641
  4. Step 4: Simplify right side
    380,640,988x = 366,841,770,750,478,912
  5. Step 5: Solve for x
    x = 366,841,770,750,478,912/380,640,988
  6. Step 6: Final answer
    x = 963,747,421.63

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.