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Finding the Fourth Proportional to 666,080.94, 998,970.69 and 305,905.53

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Solution

The fourth proportional to 666,080.94, 998,970.69 and 305,905.53 is: 458,789.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,080.94 : 998,970.69 = 305,905.53 : x
  2. Step 2: Convert to fraction form
    666,080.94/998,970.69 = 305,905.53/x
  3. Step 3: Cross multiply
    666,080.94x = 998,970.69 × 305,905.53
  4. Step 4: Simplify right side
    666,080.94x = 305,590,658,378.92
  5. Step 5: Solve for x
    x = 305,590,658,378.92/666,080.94
  6. Step 6: Final answer
    x = 458,789.08

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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.