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Finding the Third Proportional to 491,256 and 720,768

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Solution

The third proportional to 491,256 and 720,768 is: 1,057,506.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,256 : 720,768 = 720,768 : x
  2. Step 2: Convert to fraction form
    491,256/720,768 = 720,768/x
  3. Step 3: Cross multiply
    491,256x = 720,768 × 720,768
  4. Step 4: Simplify right side
    491,256x = 519,506,509,824
  5. Step 5: Solve for x
    x = 519,506,509,824/491,256
  6. Step 6: Final answer
    x = 1,057,506.70

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.