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Finding the Third Proportional to 399,235,148 and 868,770,660

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Solution

The third proportional to 399,235,148 and 868,770,660 is: 1,890,521,071.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,235,148 : 868,770,660 = 868,770,660 : x
  2. Step 2: Convert to fraction form
    399,235,148/868,770,660 = 868,770,660/x
  3. Step 3: Cross multiply
    399,235,148x = 868,770,660 × 868,770,660
  4. Step 4: Simplify right side
    399,235,148x = 754,762,459,676,835,584
  5. Step 5: Solve for x
    x = 754,762,459,676,835,584/399,235,148
  6. Step 6: Final answer
    x = 1,890,521,071.25

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.