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Finding the Fourth Proportional to 666,383.18, 918,652.24 and 475,064.42

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Solution

The fourth proportional to 666,383.18, 918,652.24 and 475,064.42 is: 654,906.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,383.18 : 918,652.24 = 475,064.42 : x
  2. Step 2: Convert to fraction form
    666,383.18/918,652.24 = 475,064.42/x
  3. Step 3: Cross multiply
    666,383.18x = 918,652.24 × 475,064.42
  4. Step 4: Simplify right side
    666,383.18x = 436,418,993,577.30
  5. Step 5: Solve for x
    x = 436,418,993,577.30/666,383.18
  6. Step 6: Final answer
    x = 654,906.98

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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.