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Finding the Third Proportional to 355,155 and 780,294

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Solution

The third proportional to 355,155 and 780,294 is: 1,714,346.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,155 : 780,294 = 780,294 : x
  2. Step 2: Convert to fraction form
    355,155/780,294 = 780,294/x
  3. Step 3: Cross multiply
    355,155x = 780,294 × 780,294
  4. Step 4: Simplify right side
    355,155x = 608,858,726,436
  5. Step 5: Solve for x
    x = 608,858,726,436/355,155
  6. Step 6: Final answer
    x = 1,714,346.49

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.