Home / 430,538.06-645,945.47-131,076.61

Finding the Fourth Proportional to 430,538.06, 645,945.47 and 131,076.61

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Solution

The fourth proportional to 430,538.06, 645,945.47 and 131,076.61 is: 196,657.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,538.06 : 645,945.47 = 131,076.61 : x
  2. Step 2: Convert to fraction form
    430,538.06/645,945.47 = 131,076.61/x
  3. Step 3: Cross multiply
    430,538.06x = 645,945.47 × 131,076.61
  4. Step 4: Simplify right side
    430,538.06x = 84,668,342,452.46
  5. Step 5: Solve for x
    x = 84,668,342,452.46/430,538.06
  6. Step 6: Final answer
    x = 196,657.04

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1.5x scale

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.