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Finding the Fourth Proportional to 661,850.36, 993,055.52 and 361,980.86

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Solution

The fourth proportional to 661,850.36, 993,055.52 and 361,980.86 is: 543,124.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,850.36 : 993,055.52 = 361,980.86 : x
  2. Step 2: Convert to fraction form
    661,850.36/993,055.52 = 361,980.86/x
  3. Step 3: Cross multiply
    661,850.36x = 993,055.52 × 361,980.86
  4. Step 4: Simplify right side
    661,850.36x = 359,467,091,157.35
  5. Step 5: Solve for x
    x = 359,467,091,157.35/661,850.36
  6. Step 6: Final answer
    x = 543,124.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.