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Finding the Third Proportional to 280,480 and 615,392

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Solution

The third proportional to 280,480 and 615,392 is: 1,350,211.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,480 : 615,392 = 615,392 : x
  2. Step 2: Convert to fraction form
    280,480/615,392 = 615,392/x
  3. Step 3: Cross multiply
    280,480x = 615,392 × 615,392
  4. Step 4: Simplify right side
    280,480x = 378,707,313,664
  5. Step 5: Solve for x
    x = 378,707,313,664/280,480
  6. Step 6: Final answer
    x = 1,350,211.47

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.