Home / 927,638.60-1,389,845.10-427,977.80

Finding the Fourth Proportional to 927,638.60, 1,389,845.10 and 427,977.80

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Solution

The fourth proportional to 927,638.60, 1,389,845.10 and 427,977.80 is: 641,222.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    927,638.60 : 1,389,845.10 = 427,977.80 : x
  2. Step 2: Convert to fraction form
    927,638.60/1,389,845.10 = 427,977.80/x
  3. Step 3: Cross multiply
    927,638.60x = 1,389,845.10 × 427,977.80
  4. Step 4: Simplify right side
    927,638.60x = 594,822,848,238.78
  5. Step 5: Solve for x
    x = 594,822,848,238.78/927,638.60
  6. Step 6: Final answer
    x = 641,222.61

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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.