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Finding the Fourth Proportional to 706,220.20, 1,057,580.70 and 453,111.40

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Solution

The fourth proportional to 706,220.20, 1,057,580.70 and 453,111.40 is: 678,544.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,220.20 : 1,057,580.70 = 453,111.40 : x
  2. Step 2: Convert to fraction form
    706,220.20/1,057,580.70 = 453,111.40/x
  3. Step 3: Cross multiply
    706,220.20x = 1,057,580.70 × 453,111.40
  4. Step 4: Simplify right side
    706,220.20x = 479,201,871,589.98
  5. Step 5: Solve for x
    x = 479,201,871,589.98/706,220.20
  6. Step 6: Final answer
    x = 678,544.56

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