Home / 658,186.21-987,083.70-279,101.35

Finding the Fourth Proportional to 658,186.21, 987,083.70 and 279,101.35

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Solution

The fourth proportional to 658,186.21, 987,083.70 and 279,101.35 is: 418,569.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,186.21 : 987,083.70 = 279,101.35 : x
  2. Step 2: Convert to fraction form
    658,186.21/987,083.70 = 279,101.35/x
  3. Step 3: Cross multiply
    658,186.21x = 987,083.70 × 279,101.35
  4. Step 4: Simplify right side
    658,186.21x = 275,496,393,233.00
  5. Step 5: Solve for x
    x = 275,496,393,233.00/658,186.21
  6. Step 6: Final answer
    x = 418,569.08

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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.