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Finding the Third Proportional to 455,998.50 and 989,878.50

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Solution

The third proportional to 455,998.50 and 989,878.50 is: 2,148,821.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,998.50 : 989,878.50 = 989,878.50 : x
  2. Step 2: Convert to fraction form
    455,998.50/989,878.50 = 989,878.50/x
  3. Step 3: Cross multiply
    455,998.50x = 989,878.50 × 989,878.50
  4. Step 4: Simplify right side
    455,998.50x = 979,859,444,762.25
  5. Step 5: Solve for x
    x = 979,859,444,762.25/455,998.50
  6. Step 6: Final answer
    x = 2,148,821.64

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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.