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Finding the Fourth Proportional to 978,140.60, 1,467,470.10 and 346,988.60

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Solution

The fourth proportional to 978,140.60, 1,467,470.10 and 346,988.60 is: 520,574.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,140.60 : 1,467,470.10 = 346,988.60 : x
  2. Step 2: Convert to fraction form
    978,140.60/1,467,470.10 = 346,988.60/x
  3. Step 3: Cross multiply
    978,140.60x = 1,467,470.10 × 346,988.60
  4. Step 4: Simplify right side
    978,140.60x = 509,195,395,540.86
  5. Step 5: Solve for x
    x = 509,195,395,540.86/978,140.60
  6. Step 6: Final answer
    x = 520,574.85

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