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Finding the Fourth Proportional to 606,109.40, 911,132.40 and 429,837.20

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Solution

The fourth proportional to 606,109.40, 911,132.40 and 429,837.20 is: 646,151.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,109.40 : 911,132.40 = 429,837.20 : x
  2. Step 2: Convert to fraction form
    606,109.40/911,132.40 = 429,837.20/x
  3. Step 3: Cross multiply
    606,109.40x = 911,132.40 × 429,837.20
  4. Step 4: Simplify right side
    606,109.40x = 391,638,599,645.28
  5. Step 5: Solve for x
    x = 391,638,599,645.28/606,109.40
  6. Step 6: Final answer
    x = 646,151.67

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