Home / 658,185.21-987,082.20-279,100.35

Finding the Fourth Proportional to 658,185.21, 987,082.20 and 279,100.35

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Solution

The fourth proportional to 658,185.21, 987,082.20 and 279,100.35 is: 418,567.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,185.21 : 987,082.20 = 279,100.35 : x
  2. Step 2: Convert to fraction form
    658,185.21/987,082.20 = 279,100.35/x
  3. Step 3: Cross multiply
    658,185.21x = 987,082.20 × 279,100.35
  4. Step 4: Simplify right side
    658,185.21x = 275,494,987,498.77
  5. Step 5: Solve for x
    x = 275,494,987,498.77/658,185.21
  6. Step 6: Final answer
    x = 418,567.58

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1.5x scale

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.