Home / 979,391,999.80-1,469,087,999.70-851,846,159.80

Finding the Fourth Proportional to 979,391,999.80, 1,469,087,999.70 and 851,846,159.80

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Solution

The fourth proportional to 979,391,999.80, 1,469,087,999.70 and 851,846,159.80 is: 1,277,769,239.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,391,999.80 : 1,469,087,999.70 = 851,846,159.80 : x
  2. Step 2: Convert to fraction form
    979,391,999.80/1,469,087,999.70 = 851,846,159.80/x
  3. Step 3: Cross multiply
    979,391,999.80x = 1,469,087,999.70 × 851,846,159.80
  4. Step 4: Simplify right side
    979,391,999.80x = 1,251,436,970,952,708,608
  5. Step 5: Solve for x
    x = 1,251,436,970,952,708,608/979,391,999.80
  6. Step 6: Final answer
    x = 1,277,769,239.70

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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.