Home / 386,448,620.70-579,504,969.45-127,563,807.90

Finding the Fourth Proportional to 386,448,620.70, 579,504,969.45 and 127,563,807.90

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Solution

The fourth proportional to 386,448,620.70, 579,504,969.45 and 127,563,807.90 is: 191,290,268.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,448,620.70 : 579,504,969.45 = 127,563,807.90 : x
  2. Step 2: Convert to fraction form
    386,448,620.70/579,504,969.45 = 127,563,807.90/x
  3. Step 3: Cross multiply
    386,448,620.70x = 579,504,969.45 × 127,563,807.90
  4. Step 4: Simplify right side
    386,448,620.70x = 73,923,860,600,015,184
  5. Step 5: Solve for x
    x = 73,923,860,600,015,184/386,448,620.70
  6. Step 6: Final answer
    x = 191,290,268.98

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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.