Home / 919,708.92-1,379,063.16-320,509.26

Finding the Fourth Proportional to 919,708.92, 1,379,063.16 and 320,509.26

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Solution

The fourth proportional to 919,708.92, 1,379,063.16 and 320,509.26 is: 480,589.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,708.92 : 1,379,063.16 = 320,509.26 : x
  2. Step 2: Convert to fraction form
    919,708.92/1,379,063.16 = 320,509.26/x
  3. Step 3: Cross multiply
    919,708.92x = 1,379,063.16 × 320,509.26
  4. Step 4: Simplify right side
    919,708.92x = 442,002,512,904.86
  5. Step 5: Solve for x
    x = 442,002,512,904.86/919,708.92
  6. Step 6: Final answer
    x = 480,589.57

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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.