Home / 426,623.72-639,935.57-127,096.56

Finding the Fourth Proportional to 426,623.72, 639,935.57 and 127,096.56

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Solution

The fourth proportional to 426,623.72, 639,935.57 and 127,096.56 is: 190,644.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,623.72 : 639,935.57 = 127,096.56 : x
  2. Step 2: Convert to fraction form
    426,623.72/639,935.57 = 127,096.56/x
  3. Step 3: Cross multiply
    426,623.72x = 639,935.57 × 127,096.56
  4. Step 4: Simplify right side
    426,623.72x = 81,333,609,886.38
  5. Step 5: Solve for x
    x = 81,333,609,886.38/426,623.72
  6. Step 6: Final answer
    x = 190,644.84

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Similar ratio
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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.