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Finding the Fourth Proportional to 428,853, 591,429.69 and 267,722.94

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Solution

The fourth proportional to 428,853, 591,429.69 and 267,722.94 is: 369,215.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,853 : 591,429.69 = 267,722.94 : x
  2. Step 2: Convert to fraction form
    428,853/591,429.69 = 267,722.94/x
  3. Step 3: Cross multiply
    428,853x = 591,429.69 × 267,722.94
  4. Step 4: Simplify right side
    428,853x = 158,339,295,410.09
  5. Step 5: Solve for x
    x = 158,339,295,410.09/428,853
  6. Step 6: Final answer
    x = 369,215.78

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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.