Home / 1,128,477.82-1,557,299.14-645,053.37

Finding the Fourth Proportional to 1,128,477.82, 1,557,299.14 and 645,053.37

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Solution

The fourth proportional to 1,128,477.82, 1,557,299.14 and 645,053.37 is: 890,173.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,477.82 : 1,557,299.14 = 645,053.37 : x
  2. Step 2: Convert to fraction form
    1,128,477.82/1,557,299.14 = 645,053.37/x
  3. Step 3: Cross multiply
    1,128,477.82x = 1,557,299.14 × 645,053.37
  4. Step 4: Simplify right side
    1,128,477.82x = 1,004,541,061,476.62
  5. Step 5: Solve for x
    x = 1,004,541,061,476.62/1,128,477.82
  6. Step 6: Final answer
    x = 890,173.51

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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.