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Finding the Fourth Proportional to 428,071.32, 590,732.46 and 246,783.60

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Solution

The fourth proportional to 428,071.32, 590,732.46 and 246,783.60 is: 340,557.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,071.32 : 590,732.46 = 246,783.60 : x
  2. Step 2: Convert to fraction form
    428,071.32/590,732.46 = 246,783.60/x
  3. Step 3: Cross multiply
    428,071.32x = 590,732.46 × 246,783.60
  4. Step 4: Simplify right side
    428,071.32x = 145,783,083,115.66
  5. Step 5: Solve for x
    x = 145,783,083,115.66/428,071.32
  6. Step 6: Final answer
    x = 340,557.93

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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.