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Finding the Third Proportional to 393,726,108 and 861,563,328

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Solution

The third proportional to 393,726,108 and 861,563,328 is: 1,885,298,823.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,726,108 : 861,563,328 = 861,563,328 : x
  2. Step 2: Convert to fraction form
    393,726,108/861,563,328 = 861,563,328/x
  3. Step 3: Cross multiply
    393,726,108x = 861,563,328 × 861,563,328
  4. Step 4: Simplify right side
    393,726,108x = 742,291,368,154,435,584
  5. Step 5: Solve for x
    x = 742,291,368,154,435,584/393,726,108
  6. Step 6: Final answer
    x = 1,885,298,823.40

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.