Finding the Fourth Proportional to 7,338,985.20, 11,008,477.80 and 6,772,114.80
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Solution
The fourth proportional to 7,338,985.20, 11,008,477.80 and 6,772,114.80 is: 10,158,172.20
Step by Step Solution
- Step 1: Write the proportion equation
7,338,985.20 : 11,008,477.80 = 6,772,114.80 : x - Step 2: Convert to fraction form
7,338,985.20/11,008,477.80 = 6,772,114.80/x - Step 3: Cross multiply
7,338,985.20x = 11,008,477.80 × 6,772,114.80 - Step 4: Simplify right side
7,338,985.20x = 74,550,675,434,851.44 - Step 5: Solve for x
x = 74,550,675,434,851.44/7,338,985.20 - Step 6: Final answer
x = 10,158,172.20
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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.