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Finding the Fourth Proportional to 1,395,384, 2,093,388 and 508,920

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Solution

The fourth proportional to 1,395,384, 2,093,388 and 508,920 is: 763,493.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,395,384 : 2,093,388 = 508,920 : x
  2. Step 2: Convert to fraction form
    1,395,384/2,093,388 = 508,920/x
  3. Step 3: Cross multiply
    1,395,384x = 2,093,388 × 508,920
  4. Step 4: Simplify right side
    1,395,384x = 1,065,367,020,960
  5. Step 5: Solve for x
    x = 1,065,367,020,960/1,395,384
  6. Step 6: Final answer
    x = 763,493.79

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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.