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Finding the Fourth Proportional to 1,385,797, 1,912,405.62 and 749,893

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Solution

The fourth proportional to 1,385,797, 1,912,405.62 and 749,893 is: 1,034,855.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,797 : 1,912,405.62 = 749,893 : x
  2. Step 2: Convert to fraction form
    1,385,797/1,912,405.62 = 749,893/x
  3. Step 3: Cross multiply
    1,385,797x = 1,912,405.62 × 749,893
  4. Step 4: Simplify right side
    1,385,797x = 1,434,099,587,598.66
  5. Step 5: Solve for x
    x = 1,434,099,587,598.66/1,385,797
  6. Step 6: Final answer
    x = 1,034,855.46

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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.