Home / 426,827.60-640,310.89-199,350.70

Finding the Fourth Proportional to 426,827.60, 640,310.89 and 199,350.70

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Solution

The fourth proportional to 426,827.60, 640,310.89 and 199,350.70 is: 299,058.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,827.60 : 640,310.89 = 199,350.70 : x
  2. Step 2: Convert to fraction form
    426,827.60/640,310.89 = 199,350.70/x
  3. Step 3: Cross multiply
    426,827.60x = 640,310.89 × 199,350.70
  4. Step 4: Simplify right side
    426,827.60x = 127,646,422,413.75
  5. Step 5: Solve for x
    x = 127,646,422,413.75/426,827.60
  6. Step 6: Final answer
    x = 299,058.50

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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.