Home / 427,988,139.44-641,059,801.88-289,049,739.36

Finding the Fourth Proportional to 427,988,139.44, 641,059,801.88 and 289,049,739.36

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Solution

The fourth proportional to 427,988,139.44, 641,059,801.88 and 289,049,739.36 is: 432,951,644.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,988,139.44 : 641,059,801.88 = 289,049,739.36 : x
  2. Step 2: Convert to fraction form
    427,988,139.44/641,059,801.88 = 289,049,739.36/x
  3. Step 3: Cross multiply
    427,988,139.44x = 641,059,801.88 × 289,049,739.36
  4. Step 4: Simplify right side
    427,988,139.44x = 185,298,168,647,587,232
  5. Step 5: Solve for x
    x = 185,298,168,647,587,232/427,988,139.44
  6. Step 6: Final answer
    x = 432,951,644.15

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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.