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Finding the Fourth Proportional to 721,585.12, 995,248.56 and 640,008.16

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Solution

The fourth proportional to 721,585.12, 995,248.56 and 640,008.16 is: 882,733.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,585.12 : 995,248.56 = 640,008.16 : x
  2. Step 2: Convert to fraction form
    721,585.12/995,248.56 = 640,008.16/x
  3. Step 3: Cross multiply
    721,585.12x = 995,248.56 × 640,008.16
  4. Step 4: Simplify right side
    721,585.12x = 636,967,199,628.25
  5. Step 5: Solve for x
    x = 636,967,199,628.25/721,585.12
  6. Step 6: Final answer
    x = 882,733.28

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