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Finding the Third Proportional to 508,700.25 and 787,320

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Solution

The third proportional to 508,700.25 and 787,320 is: 1,218,542.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,700.25 : 787,320 = 787,320 : x
  2. Step 2: Convert to fraction form
    508,700.25/787,320 = 787,320/x
  3. Step 3: Cross multiply
    508,700.25x = 787,320 × 787,320
  4. Step 4: Simplify right side
    508,700.25x = 619,872,782,400
  5. Step 5: Solve for x
    x = 619,872,782,400/508,700.25
  6. Step 6: Final answer
    x = 1,218,542.32

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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.