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Finding the Fourth Proportional to 1,165,066.16, 1,747,014.72 and 678,905.78

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Solution

The fourth proportional to 1,165,066.16, 1,747,014.72 and 678,905.78 is: 1,018,018.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,165,066.16 : 1,747,014.72 = 678,905.78 : x
  2. Step 2: Convert to fraction form
    1,165,066.16/1,747,014.72 = 678,905.78/x
  3. Step 3: Cross multiply
    1,165,066.16x = 1,747,014.72 × 678,905.78
  4. Step 4: Simplify right side
    1,165,066.16x = 1,186,058,391,153.08
  5. Step 5: Solve for x
    x = 1,186,058,391,153.08/1,165,066.16
  6. Step 6: Final answer
    x = 1,018,018.06

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