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Finding the Third Proportional to 1,869,158,390 and 3,988,497,916

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Solution

The third proportional to 1,869,158,390 and 3,988,497,916 is: 8,510,844,084.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,869,158,390 : 3,988,497,916 = 3,988,497,916 : x
  2. Step 2: Convert to fraction form
    1,869,158,390/3,988,497,916 = 3,988,497,916/x
  3. Step 3: Cross multiply
    1,869,158,390x = 3,988,497,916 × 3,988,497,916
  4. Step 4: Simplify right side
    1,869,158,390x = 15,908,115,625,936,343,040
  5. Step 5: Solve for x
    x = 15,908,115,625,936,343,040/1,869,158,390
  6. Step 6: Final answer
    x = 8,510,844,084.19

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.