Home / 427,585.52-641,276.19-127,985.69

Finding the Fourth Proportional to 427,585.52, 641,276.19 and 127,985.69

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Solution

The fourth proportional to 427,585.52, 641,276.19 and 127,985.69 is: 191,947.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,585.52 : 641,276.19 = 127,985.69 : x
  2. Step 2: Convert to fraction form
    427,585.52/641,276.19 = 127,985.69/x
  3. Step 3: Cross multiply
    427,585.52x = 641,276.19 × 127,985.69
  4. Step 4: Simplify right side
    427,585.52x = 82,074,177,260.91
  5. Step 5: Solve for x
    x = 82,074,177,260.91/427,585.52
  6. Step 6: Final answer
    x = 191,947.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.