Home / 260,760,383,999.78-391,140,575,999.65-74,645,494,271.78

Finding the Fourth Proportional to 260,760,383,999.78, 391,140,575,999.65 and 74,645,494,271.78

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Solution

The fourth proportional to 260,760,383,999.78, 391,140,575,999.65 and 74,645,494,271.78 is: 111,968,241,407.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,760,383,999.78 : 391,140,575,999.65 = 74,645,494,271.78 : x
  2. Step 2: Convert to fraction form
    260,760,383,999.78/391,140,575,999.65 = 74,645,494,271.78/x
  3. Step 3: Cross multiply
    260,760,383,999.78x = 391,140,575,999.65 × 74,645,494,271.78
  4. Step 4: Simplify right side
    260,760,383,999.78x = 29,196,881,625,240,647,499,776
  5. Step 5: Solve for x
    x = 29,196,881,625,240,647,499,776/260,760,383,999.78
  6. Step 6: Final answer
    x = 111,968,241,407.66

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1.5x scale

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.