Finding the Fourth Proportional to 10,931,623.20, 16,397,434.80 and 7,348,442.40
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Solution
The fourth proportional to 10,931,623.20, 16,397,434.80 and 7,348,442.40 is: 11,022,663.60
Step by Step Solution
- Step 1: Write the proportion equation
10,931,623.20 : 16,397,434.80 = 7,348,442.40 : x - Step 2: Convert to fraction form
10,931,623.20/16,397,434.80 = 7,348,442.40/x - Step 3: Cross multiply
10,931,623.20x = 16,397,434.80 × 7,348,442.40 - Step 4: Simplify right side
10,931,623.20x = 120,495,605,135,555.53 - Step 5: Solve for x
x = 120,495,605,135,555.53/10,931,623.20 - Step 6: Final answer
x = 11,022,663.60
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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.