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Finding the Fourth Proportional to 428,267.28, 590,448.28 and 368,480.24

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Solution

The fourth proportional to 428,267.28, 590,448.28 and 368,480.24 is: 508,020.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,267.28 : 590,448.28 = 368,480.24 : x
  2. Step 2: Convert to fraction form
    428,267.28/590,448.28 = 368,480.24/x
  3. Step 3: Cross multiply
    428,267.28x = 590,448.28 × 368,480.24
  4. Step 4: Simplify right side
    428,267.28x = 217,568,523,921.99
  5. Step 5: Solve for x
    x = 217,568,523,921.99/428,267.28
  6. Step 6: Final answer
    x = 508,020.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.