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Finding the Fourth Proportional to 565,685.80, 780,646.26 and 311,053.48

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Solution

The fourth proportional to 565,685.80, 780,646.26 and 311,053.48 is: 429,253.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,685.80 : 780,646.26 = 311,053.48 : x
  2. Step 2: Convert to fraction form
    565,685.80/780,646.26 = 311,053.48/x
  3. Step 3: Cross multiply
    565,685.80x = 780,646.26 × 311,053.48
  4. Step 4: Simplify right side
    565,685.80x = 242,822,735,821.99
  5. Step 5: Solve for x
    x = 242,822,735,821.99/565,685.80
  6. Step 6: Final answer
    x = 429,253.72

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