Home / 919,156.86-1,378,772.37-320,178.60

Finding the Fourth Proportional to 919,156.86, 1,378,772.37 and 320,178.60

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Solution

The fourth proportional to 919,156.86, 1,378,772.37 and 320,178.60 is: 480,280.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,156.86 : 1,378,772.37 = 320,178.60 : x
  2. Step 2: Convert to fraction form
    919,156.86/1,378,772.37 = 320,178.60/x
  3. Step 3: Cross multiply
    919,156.86x = 1,378,772.37 × 320,178.60
  4. Step 4: Simplify right side
    919,156.86x = 441,453,407,145.28
  5. Step 5: Solve for x
    x = 441,453,407,145.28/919,156.86
  6. Step 6: Final answer
    x = 480,280.82

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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.