Home / 407,921.40-611,882.58-127,440.12

Finding the Fourth Proportional to 407,921.40, 611,882.58 and 127,440.12

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Solution

The fourth proportional to 407,921.40, 611,882.58 and 127,440.12 is: 191,160.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,921.40 : 611,882.58 = 127,440.12 : x
  2. Step 2: Convert to fraction form
    407,921.40/611,882.58 = 127,440.12/x
  3. Step 3: Cross multiply
    407,921.40x = 611,882.58 × 127,440.12
  4. Step 4: Simplify right side
    407,921.40x = 77,978,389,421.11
  5. Step 5: Solve for x
    x = 77,978,389,421.11/407,921.40
  6. Step 6: Final answer
    x = 191,160.33

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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.