Home / 856,838.20-1,285,257.30-657,772.60

Finding the Fourth Proportional to 856,838.20, 1,285,257.30 and 657,772.60

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Solution

The fourth proportional to 856,838.20, 1,285,257.30 and 657,772.60 is: 986,658.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,838.20 : 1,285,257.30 = 657,772.60 : x
  2. Step 2: Convert to fraction form
    856,838.20/1,285,257.30 = 657,772.60/x
  3. Step 3: Cross multiply
    856,838.20x = 1,285,257.30 × 657,772.60
  4. Step 4: Simplify right side
    856,838.20x = 845,407,035,889.98
  5. Step 5: Solve for x
    x = 845,407,035,889.98/856,838.20
  6. Step 6: Final answer
    x = 986,658.90

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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.