Home / 1,318,874.40-1,978,274.54-420,369.95

Finding the Fourth Proportional to 1,318,874.40, 1,978,274.54 and 420,369.95

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Solution

The fourth proportional to 1,318,874.40, 1,978,274.54 and 420,369.95 is: 630,543.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,874.40 : 1,978,274.54 = 420,369.95 : x
  2. Step 2: Convert to fraction form
    1,318,874.40/1,978,274.54 = 420,369.95/x
  3. Step 3: Cross multiply
    1,318,874.40x = 1,978,274.54 × 420,369.95
  4. Step 4: Simplify right side
    1,318,874.40x = 831,607,175,462.68
  5. Step 5: Solve for x
    x = 831,607,175,462.68/1,318,874.40
  6. Step 6: Final answer
    x = 630,543.12

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