Home / 428,884.20-591,848.78-247,590

Finding the Fourth Proportional to 428,884.20, 591,848.78 and 247,590

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Solution

The fourth proportional to 428,884.20, 591,848.78 and 247,590 is: 341,667.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,884.20 : 591,848.78 = 247,590 : x
  2. Step 2: Convert to fraction form
    428,884.20/591,848.78 = 247,590/x
  3. Step 3: Cross multiply
    428,884.20x = 591,848.78 × 247,590
  4. Step 4: Simplify right side
    428,884.20x = 146,535,838,202.25
  5. Step 5: Solve for x
    x = 146,535,838,202.25/428,884.20
  6. Step 6: Final answer
    x = 341,667.61

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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.