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Finding the Third Proportional to 8,516,487 and 18,681,789

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Solution

The third proportional to 8,516,487 and 18,681,789 is: 40,980,423.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,516,487 : 18,681,789 = 18,681,789 : x
  2. Step 2: Convert to fraction form
    8,516,487/18,681,789 = 18,681,789/x
  3. Step 3: Cross multiply
    8,516,487x = 18,681,789 × 18,681,789
  4. Step 4: Simplify right side
    8,516,487x = 349,009,240,240,521
  5. Step 5: Solve for x
    x = 349,009,240,240,521/8,516,487
  6. Step 6: Final answer
    x = 40,980,423.06

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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.