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Finding the Third Proportional to 290,781 and 616,776

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Solution

The third proportional to 290,781 and 616,776 is: 1,308,244.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,781 : 616,776 = 616,776 : x
  2. Step 2: Convert to fraction form
    290,781/616,776 = 616,776/x
  3. Step 3: Cross multiply
    290,781x = 616,776 × 616,776
  4. Step 4: Simplify right side
    290,781x = 380,412,634,176
  5. Step 5: Solve for x
    x = 380,412,634,176/290,781
  6. Step 6: Final answer
    x = 1,308,244.47

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.