Home / 919,148.60-1,378,760.00-320,170.34

Finding the Fourth Proportional to 919,148.60, 1,378,760.00 and 320,170.34

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Solution

The fourth proportional to 919,148.60, 1,378,760.00 and 320,170.34 is: 480,268.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,148.60 : 1,378,760.00 = 320,170.34 : x
  2. Step 2: Convert to fraction form
    919,148.60/1,378,760.00 = 320,170.34/x
  3. Step 3: Cross multiply
    919,148.60x = 1,378,760.00 × 320,170.34
  4. Step 4: Simplify right side
    919,148.60x = 441,438,059,824.45
  5. Step 5: Solve for x
    x = 441,438,059,824.45/919,148.60
  6. Step 6: Final answer
    x = 480,268.43

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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.