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Finding the Third Proportional to 990,180 and 1,487,460

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Solution

The third proportional to 990,180 and 1,487,460 is: 2,234,479.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,180 : 1,487,460 = 1,487,460 : x
  2. Step 2: Convert to fraction form
    990,180/1,487,460 = 1,487,460/x
  3. Step 3: Cross multiply
    990,180x = 1,487,460 × 1,487,460
  4. Step 4: Simplify right side
    990,180x = 2,212,537,251,600
  5. Step 5: Solve for x
    x = 2,212,537,251,600/990,180
  6. Step 6: Final answer
    x = 2,234,479.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.