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Finding the Fourth Proportional to 978,199.70, 1,371,967.90 and 978,199.70

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Solution

The fourth proportional to 978,199.70, 1,371,967.90 and 978,199.70 is: 1,371,967.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,199.70 : 1,371,967.90 = 978,199.70 : x
  2. Step 2: Convert to fraction form
    978,199.70/1,371,967.90 = 978,199.70/x
  3. Step 3: Cross multiply
    978,199.70x = 1,371,967.90 × 978,199.70
  4. Step 4: Simplify right side
    978,199.70x = 1,342,058,588,189.63
  5. Step 5: Solve for x
    x = 1,342,058,588,189.63/978,199.70
  6. Step 6: Final answer
    x = 1,371,967.90

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Why These Related Problems?

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