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Finding the Fourth Proportional to 1,385,794, 1,912,401.48 and 749,890

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Solution

The fourth proportional to 1,385,794, 1,912,401.48 and 749,890 is: 1,034,851.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,794 : 1,912,401.48 = 749,890 : x
  2. Step 2: Convert to fraction form
    1,385,794/1,912,401.48 = 749,890/x
  3. Step 3: Cross multiply
    1,385,794x = 1,912,401.48 × 749,890
  4. Step 4: Simplify right side
    1,385,794x = 1,434,090,745,837.20
  5. Step 5: Solve for x
    x = 1,434,090,745,837.20/1,385,794
  6. Step 6: Final answer
    x = 1,034,851.32

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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.