Home / 821,268,525.31-1,231,902,802.20-199,479,567.42

Finding the Fourth Proportional to 821,268,525.31, 1,231,902,802.20 and 199,479,567.42

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Solution

The fourth proportional to 821,268,525.31, 1,231,902,802.20 and 199,479,567.42 is: 299,219,354.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,268,525.31 : 1,231,902,802.20 = 199,479,567.42 : x
  2. Step 2: Convert to fraction form
    821,268,525.31/1,231,902,802.20 = 199,479,567.42/x
  3. Step 3: Cross multiply
    821,268,525.31x = 1,231,902,802.20 × 199,479,567.42
  4. Step 4: Simplify right side
    821,268,525.31x = 245,739,438,083,559,584
  5. Step 5: Solve for x
    x = 245,739,438,083,559,584/821,268,525.31
  6. Step 6: Final answer
    x = 299,219,354.58

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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.