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Finding the Fourth Proportional to 612,981.60, 919,472.40 and 192,256.80

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Solution

The fourth proportional to 612,981.60, 919,472.40 and 192,256.80 is: 288,385.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,981.60 : 919,472.40 = 192,256.80 : x
  2. Step 2: Convert to fraction form
    612,981.60/919,472.40 = 192,256.80/x
  3. Step 3: Cross multiply
    612,981.60x = 919,472.40 × 192,256.80
  4. Step 4: Simplify right side
    612,981.60x = 176,774,821,312.32
  5. Step 5: Solve for x
    x = 176,774,821,312.32/612,981.60
  6. Step 6: Final answer
    x = 288,385.20

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