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Finding the Fourth Proportional to 978,320.80, 1,465,148.40 and 978,320.80

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Solution

The fourth proportional to 978,320.80, 1,465,148.40 and 978,320.80 is: 1,465,148.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,320.80 : 1,465,148.40 = 978,320.80 : x
  2. Step 2: Convert to fraction form
    978,320.80/1,465,148.40 = 978,320.80/x
  3. Step 3: Cross multiply
    978,320.80x = 1,465,148.40 × 978,320.80
  4. Step 4: Simplify right side
    978,320.80x = 1,433,385,154,806.72
  5. Step 5: Solve for x
    x = 1,433,385,154,806.72/978,320.80
  6. Step 6: Final answer
    x = 1,465,148.40

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