Home / 780,415,100.88-1,170,623,156.80-198,193,010.64

Finding the Fourth Proportional to 780,415,100.88, 1,170,623,156.80 and 198,193,010.64

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Solution

The fourth proportional to 780,415,100.88, 1,170,623,156.80 and 198,193,010.64 is: 297,289,644.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,415,100.88 : 1,170,623,156.80 = 198,193,010.64 : x
  2. Step 2: Convert to fraction form
    780,415,100.88/1,170,623,156.80 = 198,193,010.64/x
  3. Step 3: Cross multiply
    780,415,100.88x = 1,170,623,156.80 × 198,193,010.64
  4. Step 4: Simplify right side
    780,415,100.88x = 232,009,327,771,092,768
  5. Step 5: Solve for x
    x = 232,009,327,771,092,768/780,415,100.88
  6. Step 6: Final answer
    x = 297,289,644.33

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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.