Home / 850,890.80-1,276,249.80-289,917.20

Finding the Fourth Proportional to 850,890.80, 1,276,249.80 and 289,917.20

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Solution

The fourth proportional to 850,890.80, 1,276,249.80 and 289,917.20 is: 434,846.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    850,890.80 : 1,276,249.80 = 289,917.20 : x
  2. Step 2: Convert to fraction form
    850,890.80/1,276,249.80 = 289,917.20/x
  3. Step 3: Cross multiply
    850,890.80x = 1,276,249.80 × 289,917.20
  4. Step 4: Simplify right side
    850,890.80x = 370,006,768,516.56
  5. Step 5: Solve for x
    x = 370,006,768,516.56/850,890.80
  6. Step 6: Final answer
    x = 434,846.36

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1.5x scale

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.