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Finding the Fourth Proportional to 660,675.83, 991,079.15 and 211,283.78

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Solution

The fourth proportional to 660,675.83, 991,079.15 and 211,283.78 is: 316,946.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,675.83 : 991,079.15 = 211,283.78 : x
  2. Step 2: Convert to fraction form
    660,675.83/991,079.15 = 211,283.78/x
  3. Step 3: Cross multiply
    660,675.83x = 991,079.15 × 211,283.78
  4. Step 4: Simplify right side
    660,675.83x = 209,398,943,079.37
  5. Step 5: Solve for x
    x = 209,398,943,079.37/660,675.83
  6. Step 6: Final answer
    x = 316,946.58

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