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Finding the Fourth Proportional to 667,567.77, 921,239.78 and 361,650.03

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Solution

The fourth proportional to 667,567.77, 921,239.78 and 361,650.03 is: 499,075.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,567.77 : 921,239.78 = 361,650.03 : x
  2. Step 2: Convert to fraction form
    667,567.77/921,239.78 = 361,650.03/x
  3. Step 3: Cross multiply
    667,567.77x = 921,239.78 × 361,650.03
  4. Step 4: Simplify right side
    667,567.77x = 333,166,392,265.94
  5. Step 5: Solve for x
    x = 333,166,392,265.94/667,567.77
  6. Step 6: Final answer
    x = 499,075.01

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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.