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Finding the Third Proportional to 358,960 and 783,120

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Solution

The third proportional to 358,960 and 783,120 is: 1,708,482.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,960 : 783,120 = 783,120 : x
  2. Step 2: Convert to fraction form
    358,960/783,120 = 783,120/x
  3. Step 3: Cross multiply
    358,960x = 783,120 × 783,120
  4. Step 4: Simplify right side
    358,960x = 613,276,934,400
  5. Step 5: Solve for x
    x = 613,276,934,400/358,960
  6. Step 6: Final answer
    x = 1,708,482.66

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.