Home / 780,415,089.84-1,170,623,140.22-198,192,999.60

Finding the Fourth Proportional to 780,415,089.84, 1,170,623,140.22 and 198,192,999.60

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Solution

The fourth proportional to 780,415,089.84, 1,170,623,140.22 and 198,192,999.60 is: 297,289,627.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,415,089.84 : 1,170,623,140.22 = 198,192,999.60 : x
  2. Step 2: Convert to fraction form
    780,415,089.84/1,170,623,140.22 = 198,192,999.60/x
  3. Step 3: Cross multiply
    780,415,089.84x = 1,170,623,140.22 × 198,192,999.60
  4. Step 4: Simplify right side
    780,415,089.84x = 232,009,311,561,373,216
  5. Step 5: Solve for x
    x = 232,009,311,561,373,216/780,415,089.84
  6. Step 6: Final answer
    x = 297,289,627.77

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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.