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Finding the Fourth Proportional to 663,319.80, 915,405.84 and 376,888.68

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Solution

The fourth proportional to 663,319.80, 915,405.84 and 376,888.68 is: 520,120.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,319.80 : 915,405.84 = 376,888.68 : x
  2. Step 2: Convert to fraction form
    663,319.80/915,405.84 = 376,888.68/x
  3. Step 3: Cross multiply
    663,319.80x = 915,405.84 × 376,888.68
  4. Step 4: Simplify right side
    663,319.80x = 345,006,098,701.89
  5. Step 5: Solve for x
    x = 345,006,098,701.89/663,319.80
  6. Step 6: Final answer
    x = 520,120.31

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