Home / 428,415.72-591,229.44-258,617.04

Finding the Fourth Proportional to 428,415.72, 591,229.44 and 258,617.04

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Solution

The fourth proportional to 428,415.72, 591,229.44 and 258,617.04 is: 356,901.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,415.72 : 591,229.44 = 258,617.04 : x
  2. Step 2: Convert to fraction form
    428,415.72/591,229.44 = 258,617.04/x
  3. Step 3: Cross multiply
    428,415.72x = 591,229.44 × 258,617.04
  4. Step 4: Simplify right side
    428,415.72x = 152,902,007,733.66
  5. Step 5: Solve for x
    x = 152,902,007,733.66/428,415.72
  6. Step 6: Final answer
    x = 356,901.02

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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.