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Finding the Fourth Proportional to 666,567.81, 918,906.71 and 475,249.05

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Solution

The fourth proportional to 666,567.81, 918,906.71 and 475,249.05 is: 655,161.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,567.81 : 918,906.71 = 475,249.05 : x
  2. Step 2: Convert to fraction form
    666,567.81/918,906.71 = 475,249.05/x
  3. Step 3: Cross multiply
    666,567.81x = 918,906.71 × 475,249.05
  4. Step 4: Simplify right side
    666,567.81x = 436,709,538,589.88
  5. Step 5: Solve for x
    x = 436,709,538,589.88/666,567.81
  6. Step 6: Final answer
    x = 655,161.46

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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.