Home / 383,999.77-529,932.41-209,579.50

Finding the Fourth Proportional to 383,999.77, 529,932.41 and 209,579.50

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Solution

The fourth proportional to 383,999.77, 529,932.41 and 209,579.50 is: 289,226.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,999.77 : 529,932.41 = 209,579.50 : x
  2. Step 2: Convert to fraction form
    383,999.77/529,932.41 = 209,579.50/x
  3. Step 3: Cross multiply
    383,999.77x = 529,932.41 × 209,579.50
  4. Step 4: Simplify right side
    383,999.77x = 111,062,969,521.60
  5. Step 5: Solve for x
    x = 111,062,969,521.60/383,999.77
  6. Step 6: Final answer
    x = 289,226.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.