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Finding the Third Proportional to 256,784 and 556,928

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Solution

The third proportional to 256,784 and 556,928 is: 1,207,897.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,784 : 556,928 = 556,928 : x
  2. Step 2: Convert to fraction form
    256,784/556,928 = 556,928/x
  3. Step 3: Cross multiply
    256,784x = 556,928 × 556,928
  4. Step 4: Simplify right side
    256,784x = 310,168,797,184
  5. Step 5: Solve for x
    x = 310,168,797,184/256,784
  6. Step 6: Final answer
    x = 1,207,897.68

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.