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Finding the Fourth Proportional to 520,064.60, 780,096.90 and 306,613.40

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Solution

The fourth proportional to 520,064.60, 780,096.90 and 306,613.40 is: 459,920.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,064.60 : 780,096.90 = 306,613.40 : x
  2. Step 2: Convert to fraction form
    520,064.60/780,096.90 = 306,613.40/x
  3. Step 3: Cross multiply
    520,064.60x = 780,096.90 × 306,613.40
  4. Step 4: Simplify right side
    520,064.60x = 239,188,162,838.46
  5. Step 5: Solve for x
    x = 239,188,162,838.46/520,064.60
  6. Step 6: Final answer
    x = 459,920.10

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