Finding the Fourth Proportional to 19,938,620.40, 29,907,930.60 and 6,476,809.20
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Solution
The fourth proportional to 19,938,620.40, 29,907,930.60 and 6,476,809.20 is: 9,715,213.80
Step by Step Solution
- Step 1: Write the proportion equation
19,938,620.40 : 29,907,930.60 = 6,476,809.20 : x - Step 2: Convert to fraction form
19,938,620.40/29,907,930.60 = 6,476,809.20/x - Step 3: Cross multiply
19,938,620.40x = 29,907,930.60 × 6,476,809.20 - Step 4: Simplify right side
19,938,620.40x = 193,707,960,063,041.53 - Step 5: Solve for x
x = 193,707,960,063,041.53/19,938,620.40 - Step 6: Final answer
x = 9,715,213.80
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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.