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Finding the Third Proportional to 453,630 and 990,276

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Solution

The third proportional to 453,630 and 990,276 is: 2,161,776.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,630 : 990,276 = 990,276 : x
  2. Step 2: Convert to fraction form
    453,630/990,276 = 990,276/x
  3. Step 3: Cross multiply
    453,630x = 990,276 × 990,276
  4. Step 4: Simplify right side
    453,630x = 980,646,556,176
  5. Step 5: Solve for x
    x = 980,646,556,176/453,630
  6. Step 6: Final answer
    x = 2,161,776.24

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.