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Finding the Third Proportional to 489,778 and 742,058

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Solution

The third proportional to 489,778 and 742,058 is: 1,124,285.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,778 : 742,058 = 742,058 : x
  2. Step 2: Convert to fraction form
    489,778/742,058 = 742,058/x
  3. Step 3: Cross multiply
    489,778x = 742,058 × 742,058
  4. Step 4: Simplify right side
    489,778x = 550,650,075,364
  5. Step 5: Solve for x
    x = 550,650,075,364/489,778
  6. Step 6: Final answer
    x = 1,124,285.03

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.