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Finding the Fourth Proportional to 515,063.40, 772,595.10 and 409,309.80

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Solution

The fourth proportional to 515,063.40, 772,595.10 and 409,309.80 is: 613,964.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,063.40 : 772,595.10 = 409,309.80 : x
  2. Step 2: Convert to fraction form
    515,063.40/772,595.10 = 409,309.80/x
  3. Step 3: Cross multiply
    515,063.40x = 772,595.10 × 409,309.80
  4. Step 4: Simplify right side
    515,063.40x = 316,230,745,861.98
  5. Step 5: Solve for x
    x = 316,230,745,861.98/515,063.40
  6. Step 6: Final answer
    x = 613,964.70

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