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Finding the Third Proportional to 453,782 and 990,090

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Solution

The third proportional to 453,782 and 990,090 is: 2,160,240.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,782 : 990,090 = 990,090 : x
  2. Step 2: Convert to fraction form
    453,782/990,090 = 990,090/x
  3. Step 3: Cross multiply
    453,782x = 990,090 × 990,090
  4. Step 4: Simplify right side
    453,782x = 980,278,208,100
  5. Step 5: Solve for x
    x = 980,278,208,100/453,782
  6. Step 6: Final answer
    x = 2,160,240.40

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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.