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Finding the Third Proportional to 387,348 and 528,078

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Solution

The third proportional to 387,348 and 528,078 is: 719,937.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,348 : 528,078 = 528,078 : x
  2. Step 2: Convert to fraction form
    387,348/528,078 = 528,078/x
  3. Step 3: Cross multiply
    387,348x = 528,078 × 528,078
  4. Step 4: Simplify right side
    387,348x = 278,866,374,084
  5. Step 5: Solve for x
    x = 278,866,374,084/387,348
  6. Step 6: Final answer
    x = 719,937.56

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.