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Finding the Fourth Proportional to 1,752,624, 2,628,936 and 422,928

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Solution

The fourth proportional to 1,752,624, 2,628,936 and 422,928 is: 634,392

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,752,624 : 2,628,936 = 422,928 : x
  2. Step 2: Convert to fraction form
    1,752,624/2,628,936 = 422,928/x
  3. Step 3: Cross multiply
    1,752,624x = 2,628,936 × 422,928
  4. Step 4: Simplify right side
    1,752,624x = 1,111,850,644,608
  5. Step 5: Solve for x
    x = 1,111,850,644,608/1,752,624
  6. Step 6: Final answer
    x = 634,392

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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.