Home / 698,747.76-964,174.68-392,780.88

Finding the Fourth Proportional to 698,747.76, 964,174.68 and 392,780.88

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Solution

The fourth proportional to 698,747.76, 964,174.68 and 392,780.88 is: 541,982.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,747.76 : 964,174.68 = 392,780.88 : x
  2. Step 2: Convert to fraction form
    698,747.76/964,174.68 = 392,780.88/x
  3. Step 3: Cross multiply
    698,747.76x = 964,174.68 × 392,780.88
  4. Step 4: Simplify right side
    698,747.76x = 378,709,379,284.12
  5. Step 5: Solve for x
    x = 378,709,379,284.12/698,747.76
  6. Step 6: Final answer
    x = 541,982.96

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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.