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Finding the Third Proportional to 405,734 and 630,717

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Solution

The third proportional to 405,734 and 630,717 is: 980,455.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,734 : 630,717 = 630,717 : x
  2. Step 2: Convert to fraction form
    405,734/630,717 = 630,717/x
  3. Step 3: Cross multiply
    405,734x = 630,717 × 630,717
  4. Step 4: Simplify right side
    405,734x = 397,803,934,089
  5. Step 5: Solve for x
    x = 397,803,934,089/405,734
  6. Step 6: Final answer
    x = 980,455.01

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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.