Home / 428,785.95-591,646.38-247,431.71

Finding the Fourth Proportional to 428,785.95, 591,646.38 and 247,431.71

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Solution

The fourth proportional to 428,785.95, 591,646.38 and 247,431.71 is: 341,410.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,785.95 : 591,646.38 = 247,431.71 : x
  2. Step 2: Convert to fraction form
    428,785.95/591,646.38 = 247,431.71/x
  3. Step 3: Cross multiply
    428,785.95x = 591,646.38 × 247,431.71
  4. Step 4: Simplify right side
    428,785.95x = 146,392,076,069.96
  5. Step 5: Solve for x
    x = 146,392,076,069.96/428,785.95
  6. Step 6: Final answer
    x = 341,410.61

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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.