Home / 816,729,137.20-1,225,572,002.70-299,211,891.40

Finding the Fourth Proportional to 816,729,137.20, 1,225,572,002.70 and 299,211,891.40

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Solution

The fourth proportional to 816,729,137.20, 1,225,572,002.70 and 299,211,891.40 is: 448,993,063.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,729,137.20 : 1,225,572,002.70 = 299,211,891.40 : x
  2. Step 2: Convert to fraction form
    816,729,137.20/1,225,572,002.70 = 299,211,891.40/x
  3. Step 3: Cross multiply
    816,729,137.20x = 1,225,572,002.70 × 299,211,891.40
  4. Step 4: Simplify right side
    816,729,137.20x = 366,705,716,974,752,896
  5. Step 5: Solve for x
    x = 366,705,716,974,752,896/816,729,137.20
  6. Step 6: Final answer
    x = 448,993,063.03

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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.