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Finding the Fourth Proportional to 500,686.80, 750,062.40 and 278,396.88

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Solution

The fourth proportional to 500,686.80, 750,062.40 and 278,396.88 is: 417,057.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,686.80 : 750,062.40 = 278,396.88 : x
  2. Step 2: Convert to fraction form
    500,686.80/750,062.40 = 278,396.88/x
  3. Step 3: Cross multiply
    500,686.80x = 750,062.40 × 278,396.88
  4. Step 4: Simplify right side
    500,686.80x = 208,815,031,965.31
  5. Step 5: Solve for x
    x = 208,815,031,965.31/500,686.80
  6. Step 6: Final answer
    x = 417,057.19

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