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Finding the Fourth Proportional to 621,655.19, 857,885.48 and 367,022.78

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Solution

The fourth proportional to 621,655.19, 857,885.48 and 367,022.78 is: 506,492.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,655.19 : 857,885.48 = 367,022.78 : x
  2. Step 2: Convert to fraction form
    621,655.19/857,885.48 = 367,022.78/x
  3. Step 3: Cross multiply
    621,655.19x = 857,885.48 × 367,022.78
  4. Step 4: Simplify right side
    621,655.19x = 314,863,507,666.69
  5. Step 5: Solve for x
    x = 314,863,507,666.69/621,655.19
  6. Step 6: Final answer
    x = 506,492.21

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