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Finding the Third Proportional to 520,720 and 1,136,480

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Solution

The third proportional to 520,720 and 1,136,480 is: 2,480,386.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,720 : 1,136,480 = 1,136,480 : x
  2. Step 2: Convert to fraction form
    520,720/1,136,480 = 1,136,480/x
  3. Step 3: Cross multiply
    520,720x = 1,136,480 × 1,136,480
  4. Step 4: Simplify right side
    520,720x = 1,291,586,790,400
  5. Step 5: Solve for x
    x = 1,291,586,790,400/520,720
  6. Step 6: Final answer
    x = 2,480,386.37

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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.