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Finding the Fourth Proportional to 459,015.40, 688,523.10 and 407,839.60

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Solution

The fourth proportional to 459,015.40, 688,523.10 and 407,839.60 is: 611,759.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,015.40 : 688,523.10 = 407,839.60 : x
  2. Step 2: Convert to fraction form
    459,015.40/688,523.10 = 407,839.60/x
  3. Step 3: Cross multiply
    459,015.40x = 688,523.10 × 407,839.60
  4. Step 4: Simplify right side
    459,015.40x = 280,806,985,694.76
  5. Step 5: Solve for x
    x = 280,806,985,694.76/459,015.40
  6. Step 6: Final answer
    x = 611,759.40

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