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Finding the Fourth Proportional to 666,536.31, 918,863.24 and 475,217.55

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Solution

The fourth proportional to 666,536.31, 918,863.24 and 475,217.55 is: 655,118.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,536.31 : 918,863.24 = 475,217.55 : x
  2. Step 2: Convert to fraction form
    666,536.31/918,863.24 = 475,217.55/x
  3. Step 3: Cross multiply
    666,536.31x = 918,863.24 × 475,217.55
  4. Step 4: Simplify right side
    666,536.31x = 436,659,935,321.77
  5. Step 5: Solve for x
    x = 436,659,935,321.77/666,536.31
  6. Step 6: Final answer
    x = 655,118.00

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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.