Home / 394,791.05-592,266.55-128,480.06

Finding the Fourth Proportional to 394,791.05, 592,266.55 and 128,480.06

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Solution

The fourth proportional to 394,791.05, 592,266.55 and 128,480.06 is: 192,746.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,791.05 : 592,266.55 = 128,480.06 : x
  2. Step 2: Convert to fraction form
    394,791.05/592,266.55 = 128,480.06/x
  3. Step 3: Cross multiply
    394,791.05x = 592,266.55 × 128,480.06
  4. Step 4: Simplify right side
    394,791.05x = 76,094,443,039.46
  5. Step 5: Solve for x
    x = 76,094,443,039.46/394,791.05
  6. Step 6: Final answer
    x = 192,746.12

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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.