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Finding the Fourth Proportional to 666,052.39, 919,146.94 and 386,675.51

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Solution

The fourth proportional to 666,052.39, 919,146.94 and 386,675.51 is: 533,609.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,052.39 : 919,146.94 = 386,675.51 : x
  2. Step 2: Convert to fraction form
    666,052.39/919,146.94 = 386,675.51/x
  3. Step 3: Cross multiply
    666,052.39x = 919,146.94 × 386,675.51
  4. Step 4: Simplify right side
    666,052.39x = 355,411,611,789.44
  5. Step 5: Solve for x
    x = 355,411,611,789.44/666,052.39
  6. Step 6: Final answer
    x = 533,609.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.