Home / 405,016.20-607,524.30-399,111.30

Finding the Fourth Proportional to 405,016.20, 607,524.30 and 399,111.30

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Solution

The fourth proportional to 405,016.20, 607,524.30 and 399,111.30 is: 598,666.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,016.20 : 607,524.30 = 399,111.30 : x
  2. Step 2: Convert to fraction form
    405,016.20/607,524.30 = 399,111.30/x
  3. Step 3: Cross multiply
    405,016.20x = 607,524.30 × 399,111.30
  4. Step 4: Simplify right side
    405,016.20x = 242,469,813,154.59
  5. Step 5: Solve for x
    x = 242,469,813,154.59/405,016.20
  6. Step 6: Final answer
    x = 598,666.95

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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.