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Finding the Third Proportional to 432,878 and 939,688

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Solution

The third proportional to 432,878 and 939,688 is: 2,039,866.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,878 : 939,688 = 939,688 : x
  2. Step 2: Convert to fraction form
    432,878/939,688 = 939,688/x
  3. Step 3: Cross multiply
    432,878x = 939,688 × 939,688
  4. Step 4: Simplify right side
    432,878x = 883,013,537,344
  5. Step 5: Solve for x
    x = 883,013,537,344/432,878
  6. Step 6: Final answer
    x = 2,039,866.98

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.