Finding the Fourth Proportional to 11,333,789.40, 15,640,994.70 and 6,438,922.44
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Solution
The fourth proportional to 11,333,789.40, 15,640,994.70 and 6,438,922.44 is: 8,885,920.52
Step by Step Solution
- Step 1: Write the proportion equation
11,333,789.40 : 15,640,994.70 = 6,438,922.44 : x - Step 2: Convert to fraction form
11,333,789.40/15,640,994.70 = 6,438,922.44/x - Step 3: Cross multiply
11,333,789.40x = 15,640,994.70 × 6,438,922.44 - Step 4: Simplify right side
11,333,789.40x = 100,711,151,757,751.06 - Step 5: Solve for x
x = 100,711,151,757,751.06/11,333,789.40 - Step 6: Final answer
x = 8,885,920.52
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1.5x scale
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.