Finding the Fourth Proportional to 19,720,609.20, 29,580,913.80 and 6,257,415.60
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Solution
The fourth proportional to 19,720,609.20, 29,580,913.80 and 6,257,415.60 is: 9,386,123.40
Step by Step Solution
- Step 1: Write the proportion equation
19,720,609.20 : 29,580,913.80 = 6,257,415.60 : x - Step 2: Convert to fraction form
19,720,609.20/29,580,913.80 = 6,257,415.60/x - Step 3: Cross multiply
19,720,609.20x = 29,580,913.80 × 6,257,415.60 - Step 4: Simplify right side
19,720,609.20x = 185,100,071,474,375.28 - Step 5: Solve for x
x = 185,100,071,474,375.28/19,720,609.20 - Step 6: Final answer
x = 9,386,123.40
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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.