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Finding the Fourth Proportional to 660,663.36, 990,994.68 and 187,352.64

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Solution

The fourth proportional to 660,663.36, 990,994.68 and 187,352.64 is: 281,028.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,663.36 : 990,994.68 = 187,352.64 : x
  2. Step 2: Convert to fraction form
    660,663.36/990,994.68 = 187,352.64/x
  3. Step 3: Cross multiply
    660,663.36x = 990,994.68 × 187,352.64
  4. Step 4: Simplify right side
    660,663.36x = 185,665,469,523.96
  5. Step 5: Solve for x
    x = 185,665,469,523.96/660,663.36
  6. Step 6: Final answer
    x = 281,028.86

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1.5x scale

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.