Home / 538,137,542.12-742,629,779.70-290,618,872.52

Finding the Fourth Proportional to 538,137,542.12, 742,629,779.70 and 290,618,872.52

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Solution

The fourth proportional to 538,137,542.12, 742,629,779.70 and 290,618,872.52 is: 401,054,028.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,137,542.12 : 742,629,779.70 = 290,618,872.52 : x
  2. Step 2: Convert to fraction form
    538,137,542.12/742,629,779.70 = 290,618,872.52/x
  3. Step 3: Cross multiply
    538,137,542.12x = 742,629,779.70 × 290,618,872.52
  4. Step 4: Simplify right side
    538,137,542.12x = 215,822,229,276,189,984
  5. Step 5: Solve for x
    x = 215,822,229,276,189,984/538,137,542.12
  6. Step 6: Final answer
    x = 401,054,028.73

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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.