Finding the Fourth Proportional to 7,488,245.40, 11,232,368.10 and 7,338,946.20
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Solution
The fourth proportional to 7,488,245.40, 11,232,368.10 and 7,338,946.20 is: 11,008,419.30
Step by Step Solution
- Step 1: Write the proportion equation
7,488,245.40 : 11,232,368.10 = 7,338,946.20 : x - Step 2: Convert to fraction form
7,488,245.40/11,232,368.10 = 7,338,946.20/x - Step 3: Cross multiply
7,488,245.40x = 11,232,368.10 × 7,338,946.20 - Step 4: Simplify right side
7,488,245.40x = 82,433,745,184,496.22 - Step 5: Solve for x
x = 82,433,745,184,496.22/7,488,245.40 - Step 6: Final answer
x = 11,008,419.30
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Double scale
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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.