Home / 443,917.71-665,896.01-128,406.51

Finding the Fourth Proportional to 443,917.71, 665,896.01 and 128,406.51

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Solution

The fourth proportional to 443,917.71, 665,896.01 and 128,406.51 is: 192,615.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,917.71 : 665,896.01 = 128,406.51 : x
  2. Step 2: Convert to fraction form
    443,917.71/665,896.01 = 128,406.51/x
  3. Step 3: Cross multiply
    443,917.71x = 665,896.01 × 128,406.51
  4. Step 4: Simplify right side
    443,917.71x = 85,505,382,024.99
  5. Step 5: Solve for x
    x = 85,505,382,024.99/443,917.71
  6. Step 6: Final answer
    x = 192,615.39

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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.