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Finding the Third Proportional to 515,160 and 1,118,989

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Solution

The third proportional to 515,160 and 1,118,989 is: 2,430,577.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,160 : 1,118,989 = 1,118,989 : x
  2. Step 2: Convert to fraction form
    515,160/1,118,989 = 1,118,989/x
  3. Step 3: Cross multiply
    515,160x = 1,118,989 × 1,118,989
  4. Step 4: Simplify right side
    515,160x = 1,252,136,382,121
  5. Step 5: Solve for x
    x = 1,252,136,382,121/515,160
  6. Step 6: Final answer
    x = 2,430,577.65

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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.