Home / 328,422,855.03-450,809,347.28-290,420,493.27

Finding the Fourth Proportional to 328,422,855.03, 450,809,347.28 and 290,420,493.27

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Solution

The fourth proportional to 328,422,855.03, 450,809,347.28 and 290,420,493.27 is: 398,645,438.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,422,855.03 : 450,809,347.28 = 290,420,493.27 : x
  2. Step 2: Convert to fraction form
    328,422,855.03/450,809,347.28 = 290,420,493.27/x
  3. Step 3: Cross multiply
    328,422,855.03x = 450,809,347.28 × 290,420,493.27
  4. Step 4: Simplify right side
    328,422,855.03x = 130,924,273,007,784,320
  5. Step 5: Solve for x
    x = 130,924,273,007,784,320/328,422,855.03
  6. Step 6: Final answer
    x = 398,645,438.35

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.