Finding the Fourth Proportional to 12,805,513.05, 19,208,302.11 and 5,232,478.80
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Solution
The fourth proportional to 12,805,513.05, 19,208,302.11 and 5,232,478.80 is: 7,848,731.49
Step by Step Solution
- Step 1: Write the proportion equation
12,805,513.05 : 19,208,302.11 = 5,232,478.80 : x - Step 2: Convert to fraction form
12,805,513.05/19,208,302.11 = 5,232,478.80/x - Step 3: Cross multiply
12,805,513.05x = 19,208,302.11 × 5,232,478.80 - Step 4: Simplify right side
12,805,513.05x = 100,507,033,574,570.27 - Step 5: Solve for x
x = 100,507,033,574,570.27/12,805,513.05 - Step 6: Final answer
x = 7,848,731.49
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1.5x scale
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.