Home / 990,561,160.72-1,485,845,197.08-300,474,361.36

Finding the Fourth Proportional to 990,561,160.72, 1,485,845,197.08 and 300,474,361.36

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Solution

The fourth proportional to 990,561,160.72, 1,485,845,197.08 and 300,474,361.36 is: 450,712,590.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,561,160.72 : 1,485,845,197.08 = 300,474,361.36 : x
  2. Step 2: Convert to fraction form
    990,561,160.72/1,485,845,197.08 = 300,474,361.36/x
  3. Step 3: Cross multiply
    990,561,160.72x = 1,485,845,197.08 × 300,474,361.36
  4. Step 4: Simplify right side
    990,561,160.72x = 446,458,386,672,436,352
  5. Step 5: Solve for x
    x = 446,458,386,672,436,352/990,561,160.72
  6. Step 6: Final answer
    x = 450,712,590.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.