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Finding the Fourth Proportional to 1,385,799, 1,912,408.38 and 749,895

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Solution

The fourth proportional to 1,385,799, 1,912,408.38 and 749,895 is: 1,034,858.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,799 : 1,912,408.38 = 749,895 : x
  2. Step 2: Convert to fraction form
    1,385,799/1,912,408.38 = 749,895/x
  3. Step 3: Cross multiply
    1,385,799x = 1,912,408.38 × 749,895
  4. Step 4: Simplify right side
    1,385,799x = 1,434,105,482,120.10
  5. Step 5: Solve for x
    x = 1,434,105,482,120.10/1,385,799
  6. Step 6: Final answer
    x = 1,034,858.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.