Home / 839,809,323.70-1,259,713,985.55-768,383,653.30

Finding the Fourth Proportional to 839,809,323.70, 1,259,713,985.55 and 768,383,653.30

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Solution

The fourth proportional to 839,809,323.70, 1,259,713,985.55 and 768,383,653.30 is: 1,152,575,479.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,809,323.70 : 1,259,713,985.55 = 768,383,653.30 : x
  2. Step 2: Convert to fraction form
    839,809,323.70/1,259,713,985.55 = 768,383,653.30/x
  3. Step 3: Cross multiply
    839,809,323.70x = 1,259,713,985.55 × 768,383,653.30
  4. Step 4: Simplify right side
    839,809,323.70x = 967,943,634,330,012,288
  5. Step 5: Solve for x
    x = 967,943,634,330,012,288/839,809,323.70
  6. Step 6: Final answer
    x = 1,152,575,479.95

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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.