Home / 419,128.21-577,295.06-322,146.61

Finding the Fourth Proportional to 419,128.21, 577,295.06 and 322,146.61

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Solution

The fourth proportional to 419,128.21, 577,295.06 and 322,146.61 is: 443,715.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,128.21 : 577,295.06 = 322,146.61 : x
  2. Step 2: Convert to fraction form
    419,128.21/577,295.06 = 322,146.61/x
  3. Step 3: Cross multiply
    419,128.21x = 577,295.06 × 322,146.61
  4. Step 4: Simplify right side
    419,128.21x = 185,973,646,548.75
  5. Step 5: Solve for x
    x = 185,973,646,548.75/419,128.21
  6. Step 6: Final answer
    x = 443,715.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.