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Finding the Third Proportional to 388,416 and 524,781

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Solution

The third proportional to 388,416 and 524,781 is: 709,020.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,416 : 524,781 = 524,781 : x
  2. Step 2: Convert to fraction form
    388,416/524,781 = 524,781/x
  3. Step 3: Cross multiply
    388,416x = 524,781 × 524,781
  4. Step 4: Simplify right side
    388,416x = 275,395,097,961
  5. Step 5: Solve for x
    x = 275,395,097,961/388,416
  6. Step 6: Final answer
    x = 709,020.99

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.