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Finding the Third Proportional to 478,612 and 740,995

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Solution

The third proportional to 478,612 and 740,995 is: 1,147,220.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,612 : 740,995 = 740,995 : x
  2. Step 2: Convert to fraction form
    478,612/740,995 = 740,995/x
  3. Step 3: Cross multiply
    478,612x = 740,995 × 740,995
  4. Step 4: Simplify right side
    478,612x = 549,073,590,025
  5. Step 5: Solve for x
    x = 549,073,590,025/478,612
  6. Step 6: Final answer
    x = 1,147,220.69

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.