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Finding the Third Proportional to 788,712 and 1,220,108

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Solution

The third proportional to 788,712 and 1,220,108 is: 1,887,461.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,712 : 1,220,108 = 1,220,108 : x
  2. Step 2: Convert to fraction form
    788,712/1,220,108 = 1,220,108/x
  3. Step 3: Cross multiply
    788,712x = 1,220,108 × 1,220,108
  4. Step 4: Simplify right side
    788,712x = 1,488,663,531,664
  5. Step 5: Solve for x
    x = 1,488,663,531,664/788,712
  6. Step 6: Final answer
    x = 1,887,461.50

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.