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Finding the Fourth Proportional to 660,170.06, 990,629.61 and 356,560.46

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Solution

The fourth proportional to 660,170.06, 990,629.61 and 356,560.46 is: 535,042.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,170.06 : 990,629.61 = 356,560.46 : x
  2. Step 2: Convert to fraction form
    660,170.06/990,629.61 = 356,560.46/x
  3. Step 3: Cross multiply
    660,170.06x = 990,629.61 × 356,560.46
  4. Step 4: Simplify right side
    660,170.06x = 353,219,349,431.22
  5. Step 5: Solve for x
    x = 353,219,349,431.22/660,170.06
  6. Step 6: Final answer
    x = 535,042.97

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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.