Finding the Fourth Proportional to 13,289,576.40, 19,938,787.20 and 4,770,579.60
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Solution
The fourth proportional to 13,289,576.40, 19,938,787.20 and 4,770,579.60 is: 7,157,456.99
Step by Step Solution
- Step 1: Write the proportion equation
13,289,576.40 : 19,938,787.20 = 4,770,579.60 : x - Step 2: Convert to fraction form
13,289,576.40/19,938,787.20 = 4,770,579.60/x - Step 3: Cross multiply
13,289,576.40x = 19,938,787.20 × 4,770,579.60 - Step 4: Simplify right side
13,289,576.40x = 95,119,571,465,061.11 - Step 5: Solve for x
x = 95,119,571,465,061.11/13,289,576.40 - Step 6: Final answer
x = 7,157,456.99
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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.