Home / 515,158.49-710,961.24-285,789.64

Finding the Fourth Proportional to 515,158.49, 710,961.24 and 285,789.64

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Solution

The fourth proportional to 515,158.49, 710,961.24 and 285,789.64 is: 394,413.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,158.49 : 710,961.24 = 285,789.64 : x
  2. Step 2: Convert to fraction form
    515,158.49/710,961.24 = 285,789.64/x
  3. Step 3: Cross multiply
    515,158.49x = 710,961.24 × 285,789.64
  4. Step 4: Simplify right side
    515,158.49x = 203,185,357,451.03
  5. Step 5: Solve for x
    x = 203,185,357,451.03/515,158.49
  6. Step 6: Final answer
    x = 394,413.30

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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.