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Finding the Third Proportional to 921,712 and 1,430,520

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Solution

The third proportional to 921,712 and 1,430,520 is: 2,220,202.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,712 : 1,430,520 = 1,430,520 : x
  2. Step 2: Convert to fraction form
    921,712/1,430,520 = 1,430,520/x
  3. Step 3: Cross multiply
    921,712x = 1,430,520 × 1,430,520
  4. Step 4: Simplify right side
    921,712x = 2,046,387,470,400
  5. Step 5: Solve for x
    x = 2,046,387,470,400/921,712
  6. Step 6: Final answer
    x = 2,220,202.70

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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.