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Finding the Third Proportional to 19,398,455 and 30,430,308

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Solution

The third proportional to 19,398,455 and 30,430,308 is: 47,735,948.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,398,455 : 30,430,308 = 30,430,308 : x
  2. Step 2: Convert to fraction form
    19,398,455/30,430,308 = 30,430,308/x
  3. Step 3: Cross multiply
    19,398,455x = 30,430,308 × 30,430,308
  4. Step 4: Simplify right side
    19,398,455x = 926,003,644,974,864
  5. Step 5: Solve for x
    x = 926,003,644,974,864/19,398,455
  6. Step 6: Final answer
    x = 47,735,948.30

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.