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Finding the Fourth Proportional to 487,563.40, 731,777.10 and 287,633.80

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Solution

The fourth proportional to 487,563.40, 731,777.10 and 287,633.80 is: 431,705.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,563.40 : 731,777.10 = 287,633.80 : x
  2. Step 2: Convert to fraction form
    487,563.40/731,777.10 = 287,633.80/x
  3. Step 3: Cross multiply
    487,563.40x = 731,777.10 × 287,633.80
  4. Step 4: Simplify right side
    487,563.40x = 210,483,828,025.98
  5. Step 5: Solve for x
    x = 210,483,828,025.98/487,563.40
  6. Step 6: Final answer
    x = 431,705.55

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