Home / 818,901,245.80-1,228,351,868.70-543,402,231.40

Finding the Fourth Proportional to 818,901,245.80, 1,228,351,868.70 and 543,402,231.40

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Solution

The fourth proportional to 818,901,245.80, 1,228,351,868.70 and 543,402,231.40 is: 815,103,347.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,901,245.80 : 1,228,351,868.70 = 543,402,231.40 : x
  2. Step 2: Convert to fraction form
    818,901,245.80/1,228,351,868.70 = 543,402,231.40/x
  3. Step 3: Cross multiply
    818,901,245.80x = 1,228,351,868.70 × 543,402,231.40
  4. Step 4: Simplify right side
    818,901,245.80x = 667,489,146,395,939,840
  5. Step 5: Solve for x
    x = 667,489,146,395,939,840/818,901,245.80
  6. Step 6: Final answer
    x = 815,103,347.10

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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.