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Finding the Fourth Proportional to 651,946.20, 978,356.70 and 385,423.80

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Solution

The fourth proportional to 651,946.20, 978,356.70 and 385,423.80 is: 578,394.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,946.20 : 978,356.70 = 385,423.80 : x
  2. Step 2: Convert to fraction form
    651,946.20/978,356.70 = 385,423.80/x
  3. Step 3: Cross multiply
    651,946.20x = 978,356.70 × 385,423.80
  4. Step 4: Simplify right side
    651,946.20x = 377,081,957,069.46
  5. Step 5: Solve for x
    x = 377,081,957,069.46/651,946.20
  6. Step 6: Final answer
    x = 578,394.29

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