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Finding the Fourth Proportional to 893,863.80, 1,340,147.70 and 361,121.40

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Solution

The fourth proportional to 893,863.80, 1,340,147.70 and 361,121.40 is: 541,420.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    893,863.80 : 1,340,147.70 = 361,121.40 : x
  2. Step 2: Convert to fraction form
    893,863.80/1,340,147.70 = 361,121.40/x
  3. Step 3: Cross multiply
    893,863.80x = 1,340,147.70 × 361,121.40
  4. Step 4: Simplify right side
    893,863.80x = 483,956,013,630.78
  5. Step 5: Solve for x
    x = 483,956,013,630.78/893,863.80
  6. Step 6: Final answer
    x = 541,420.31

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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.