Home / 919,201.26-1,378,359.02-320,149.16

Finding the Fourth Proportional to 919,201.26, 1,378,359.02 and 320,149.16

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Solution

The fourth proportional to 919,201.26, 1,378,359.02 and 320,149.16 is: 480,069.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,201.26 : 1,378,359.02 = 320,149.16 : x
  2. Step 2: Convert to fraction form
    919,201.26/1,378,359.02 = 320,149.16/x
  3. Step 3: Cross multiply
    919,201.26x = 1,378,359.02 × 320,149.16
  4. Step 4: Simplify right side
    919,201.26x = 441,280,473,938.88
  5. Step 5: Solve for x
    x = 441,280,473,938.88/919,201.26
  6. Step 6: Final answer
    x = 480,069.48

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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.