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Finding the Fourth Proportional to 1,294,420.78, 1,941,721.08 and 395,793.40

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Solution

The fourth proportional to 1,294,420.78, 1,941,721.08 and 395,793.40 is: 593,717.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,294,420.78 : 1,941,721.08 = 395,793.40 : x
  2. Step 2: Convert to fraction form
    1,294,420.78/1,941,721.08 = 395,793.40/x
  3. Step 3: Cross multiply
    1,294,420.78x = 1,941,721.08 × 395,793.40
  4. Step 4: Simplify right side
    1,294,420.78x = 768,520,388,104.87
  5. Step 5: Solve for x
    x = 768,520,388,104.87/1,294,420.78
  6. Step 6: Final answer
    x = 593,717.59

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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.