Home / 919,491.64-1,378,793.22-320,438.68

Finding the Fourth Proportional to 919,491.64, 1,378,793.22 and 320,438.68

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Solution

The fourth proportional to 919,491.64, 1,378,793.22 and 320,438.68 is: 480,503.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,491.64 : 1,378,793.22 = 320,438.68 : x
  2. Step 2: Convert to fraction form
    919,491.64/1,378,793.22 = 320,438.68/x
  3. Step 3: Cross multiply
    919,491.64x = 1,378,793.22 × 320,438.68
  4. Step 4: Simplify right side
    919,491.64x = 441,818,679,409.75
  5. Step 5: Solve for x
    x = 441,818,679,409.75/919,491.64
  6. Step 6: Final answer
    x = 480,503.20

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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.