Home / 918,120,640.80-1,377,180,961.20-909,511,296.60

Finding the Fourth Proportional to 918,120,640.80, 1,377,180,961.20 and 909,511,296.60

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Solution

The fourth proportional to 918,120,640.80, 1,377,180,961.20 and 909,511,296.60 is: 1,364,266,944.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,120,640.80 : 1,377,180,961.20 = 909,511,296.60 : x
  2. Step 2: Convert to fraction form
    918,120,640.80/1,377,180,961.20 = 909,511,296.60/x
  3. Step 3: Cross multiply
    918,120,640.80x = 1,377,180,961.20 × 909,511,296.60
  4. Step 4: Simplify right side
    918,120,640.80x = 1,252,561,641,673,846,272
  5. Step 5: Solve for x
    x = 1,252,561,641,673,846,272/918,120,640.80
  6. Step 6: Final answer
    x = 1,364,266,944.90

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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.