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Finding the Fourth Proportional to 660,051.90, 989,847.45 and 344,403.90

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Solution

The fourth proportional to 660,051.90, 989,847.45 and 344,403.90 is: 516,485.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,051.90 : 989,847.45 = 344,403.90 : x
  2. Step 2: Convert to fraction form
    660,051.90/989,847.45 = 344,403.90/x
  3. Step 3: Cross multiply
    660,051.90x = 989,847.45 × 344,403.90
  4. Step 4: Simplify right side
    660,051.90x = 340,907,322,185.06
  5. Step 5: Solve for x
    x = 340,907,322,185.06/660,051.90
  6. Step 6: Final answer
    x = 516,485.63

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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.