Home / 1,123,361.93-1,549,860.94-639,584.78

Finding the Fourth Proportional to 1,123,361.93, 1,549,860.94 and 639,584.78

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Solution

The fourth proportional to 1,123,361.93, 1,549,860.94 and 639,584.78 is: 882,411.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,361.93 : 1,549,860.94 = 639,584.78 : x
  2. Step 2: Convert to fraction form
    1,123,361.93/1,549,860.94 = 639,584.78/x
  3. Step 3: Cross multiply
    1,123,361.93x = 1,549,860.94 × 639,584.78
  4. Step 4: Simplify right side
    1,123,361.93x = 991,267,468,340.49
  5. Step 5: Solve for x
    x = 991,267,468,340.49/1,123,361.93
  6. Step 6: Final answer
    x = 882,411.48

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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.