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Finding the Fourth Proportional to 3,270,624, 4,905,936 and 906,720

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Solution

The fourth proportional to 3,270,624, 4,905,936 and 906,720 is: 1,360,080

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,270,624 : 4,905,936 = 906,720 : x
  2. Step 2: Convert to fraction form
    3,270,624/4,905,936 = 906,720/x
  3. Step 3: Cross multiply
    3,270,624x = 4,905,936 × 906,720
  4. Step 4: Simplify right side
    3,270,624x = 4,448,310,289,920
  5. Step 5: Solve for x
    x = 4,448,310,289,920/3,270,624
  6. Step 6: Final answer
    x = 1,360,080

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.