Home / 698,769.72-964,336.40-392,942.36

Finding the Fourth Proportional to 698,769.72, 964,336.40 and 392,942.36

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Solution

The fourth proportional to 698,769.72, 964,336.40 and 392,942.36 is: 542,279.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,769.72 : 964,336.40 = 392,942.36 : x
  2. Step 2: Convert to fraction form
    698,769.72/964,336.40 = 392,942.36/x
  3. Step 3: Cross multiply
    698,769.72x = 964,336.40 × 392,942.36
  4. Step 4: Simplify right side
    698,769.72x = 378,928,620,849.90
  5. Step 5: Solve for x
    x = 378,928,620,849.90/698,769.72
  6. Step 6: Final answer
    x = 542,279.68

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1.5x scale

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.