Home / 426,664.20-639,413.10-284,104.20

Finding the Fourth Proportional to 426,664.20, 639,413.10 and 284,104.20

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Solution

The fourth proportional to 426,664.20, 639,413.10 and 284,104.20 is: 425,767.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,664.20 : 639,413.10 = 284,104.20 : x
  2. Step 2: Convert to fraction form
    426,664.20/639,413.10 = 284,104.20/x
  3. Step 3: Cross multiply
    426,664.20x = 639,413.10 × 284,104.20
  4. Step 4: Simplify right side
    426,664.20x = 181,659,947,245.02
  5. Step 5: Solve for x
    x = 181,659,947,245.02/426,664.20
  6. Step 6: Final answer
    x = 425,767.96

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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.