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Finding the Third Proportional to 634,280 and 1,330,840

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Solution

The third proportional to 634,280 and 1,330,840 is: 2,792,355.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,280 : 1,330,840 = 1,330,840 : x
  2. Step 2: Convert to fraction form
    634,280/1,330,840 = 1,330,840/x
  3. Step 3: Cross multiply
    634,280x = 1,330,840 × 1,330,840
  4. Step 4: Simplify right side
    634,280x = 1,771,135,105,600
  5. Step 5: Solve for x
    x = 1,771,135,105,600/634,280
  6. Step 6: Final answer
    x = 2,792,355.28

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.