Home / 919,160.86-1,378,778.38-320,182.60

Finding the Fourth Proportional to 919,160.86, 1,378,778.38 and 320,182.60

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Solution

The fourth proportional to 919,160.86, 1,378,778.38 and 320,182.60 is: 480,286.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,160.86 : 1,378,778.38 = 320,182.60 : x
  2. Step 2: Convert to fraction form
    919,160.86/1,378,778.38 = 320,182.60/x
  3. Step 3: Cross multiply
    919,160.86x = 1,378,778.38 × 320,182.60
  4. Step 4: Simplify right side
    919,160.86x = 441,460,846,532.19
  5. Step 5: Solve for x
    x = 441,460,846,532.19/919,160.86
  6. Step 6: Final answer
    x = 480,286.82

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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.