Finding the Fourth Proportional to 3,128,564,766.97, 4,317,789,505.85 and 1,858,410,768.84
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Solution
The fourth proportional to 3,128,564,766.97, 4,317,789,505.85 and 1,858,410,768.84 is: 2,564,826,721.82
Step by Step Solution
- Step 1: Write the proportion equation
3,128,564,766.97 : 4,317,789,505.85 = 1,858,410,768.84 : x - Step 2: Convert to fraction form
3,128,564,766.97/4,317,789,505.85 = 1,858,410,768.84/x - Step 3: Cross multiply
3,128,564,766.97x = 4,317,789,505.85 × 1,858,410,768.84 - Step 4: Simplify right side
3,128,564,766.97x = 8,024,226,515,261,522,944 - Step 5: Solve for x
x = 8,024,226,515,261,522,944/3,128,564,766.97 - Step 6: Final answer
x = 2,564,826,721.82
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.