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Finding the Fourth Proportional to 392,787,607.37, 589,160,054.99 and 120,158,374.37

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Solution

The fourth proportional to 392,787,607.37, 589,160,054.99 and 120,158,374.37 is: 180,231,028.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,787,607.37 : 589,160,054.99 = 120,158,374.37 : x
  2. Step 2: Convert to fraction form
    392,787,607.37/589,160,054.99 = 120,158,374.37/x
  3. Step 3: Cross multiply
    392,787,607.37x = 589,160,054.99 × 120,158,374.37
  4. Step 4: Simplify right side
    392,787,607.37x = 70,792,514,447,791,616
  5. Step 5: Solve for x
    x = 70,792,514,447,791,616/392,787,607.37
  6. Step 6: Final answer
    x = 180,231,028.48

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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.