Home / 919,150.86-1,378,763.37-320,172.60

Finding the Fourth Proportional to 919,150.86, 1,378,763.37 and 320,172.60

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Solution

The fourth proportional to 919,150.86, 1,378,763.37 and 320,172.60 is: 480,271.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,150.86 : 1,378,763.37 = 320,172.60 : x
  2. Step 2: Convert to fraction form
    919,150.86/1,378,763.37 = 320,172.60/x
  3. Step 3: Cross multiply
    919,150.86x = 1,378,763.37 × 320,172.60
  4. Step 4: Simplify right side
    919,150.86x = 441,442,252,957.66
  5. Step 5: Solve for x
    x = 441,442,252,957.66/919,150.86
  6. Step 6: Final answer
    x = 480,271.82

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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.