Home / 698,747.11-964,150.70-392,780.95

Finding the Fourth Proportional to 698,747.11, 964,150.70 and 392,780.95

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Solution

The fourth proportional to 698,747.11, 964,150.70 and 392,780.95 is: 541,970.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,747.11 : 964,150.70 = 392,780.95 : x
  2. Step 2: Convert to fraction form
    698,747.11/964,150.70 = 392,780.95/x
  3. Step 3: Cross multiply
    698,747.11x = 964,150.70 × 392,780.95
  4. Step 4: Simplify right side
    698,747.11x = 378,700,023,514.88
  5. Step 5: Solve for x
    x = 378,700,023,514.88/698,747.11
  6. Step 6: Final answer
    x = 541,970.08

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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.