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Finding the Fourth Proportional to 654,220.99, 981,082.41 and 429,521.32

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Solution

The fourth proportional to 654,220.99, 981,082.41 and 429,521.32 is: 644,118.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,220.99 : 981,082.41 = 429,521.32 : x
  2. Step 2: Convert to fraction form
    654,220.99/981,082.41 = 429,521.32/x
  3. Step 3: Cross multiply
    654,220.99x = 981,082.41 × 429,521.32
  4. Step 4: Simplify right side
    654,220.99x = 421,395,811,771.98
  5. Step 5: Solve for x
    x = 421,395,811,771.98/654,220.99
  6. Step 6: Final answer
    x = 644,118.45

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