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Finding the Third Proportional to 645,306 and 1,391,640.50

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Solution

The third proportional to 645,306 and 1,391,640.50 is: 3,001,154.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,306 : 1,391,640.50 = 1,391,640.50 : x
  2. Step 2: Convert to fraction form
    645,306/1,391,640.50 = 1,391,640.50/x
  3. Step 3: Cross multiply
    645,306x = 1,391,640.50 × 1,391,640.50
  4. Step 4: Simplify right side
    645,306x = 1,936,663,281,240.25
  5. Step 5: Solve for x
    x = 1,936,663,281,240.25/645,306
  6. Step 6: Final answer
    x = 3,001,154.93

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.