Home / 395,942.90-591,739.48-289,550.21

Finding the Fourth Proportional to 395,942.90, 591,739.48 and 289,550.21

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Solution

The fourth proportional to 395,942.90, 591,739.48 and 289,550.21 is: 432,734.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,942.90 : 591,739.48 = 289,550.21 : x
  2. Step 2: Convert to fraction form
    395,942.90/591,739.48 = 289,550.21/x
  3. Step 3: Cross multiply
    395,942.90x = 591,739.48 × 289,550.21
  4. Step 4: Simplify right side
    395,942.90x = 171,338,288,102.53
  5. Step 5: Solve for x
    x = 171,338,288,102.53/395,942.90
  6. Step 6: Final answer
    x = 432,734.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.