Home / 719,422.20-1,079,522.10-320,124.60

Finding the Fourth Proportional to 719,422.20, 1,079,522.10 and 320,124.60

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Solution

The fourth proportional to 719,422.20, 1,079,522.10 and 320,124.60 is: 480,359.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,422.20 : 1,079,522.10 = 320,124.60 : x
  2. Step 2: Convert to fraction form
    719,422.20/1,079,522.10 = 320,124.60/x
  3. Step 3: Cross multiply
    719,422.20x = 1,079,522.10 × 320,124.60
  4. Step 4: Simplify right side
    719,422.20x = 345,581,580,453.66
  5. Step 5: Solve for x
    x = 345,581,580,453.66/719,422.20
  6. Step 6: Final answer
    x = 480,359.91

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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.