Home / 816,729,015.20-1,225,571,819.70-299,211,769.40

Finding the Fourth Proportional to 816,729,015.20, 1,225,571,819.70 and 299,211,769.40

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Solution

The fourth proportional to 816,729,015.20, 1,225,571,819.70 and 299,211,769.40 is: 448,992,879.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,729,015.20 : 1,225,571,819.70 = 299,211,769.40 : x
  2. Step 2: Convert to fraction form
    816,729,015.20/1,225,571,819.70 = 299,211,769.40/x
  3. Step 3: Cross multiply
    816,729,015.20x = 1,225,571,819.70 × 299,211,769.40
  4. Step 4: Simplify right side
    816,729,015.20x = 366,705,512,699,214,784
  5. Step 5: Solve for x
    x = 366,705,512,699,214,784/816,729,015.20
  6. Step 6: Final answer
    x = 448,992,879.98

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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.