Finding the Fourth Proportional to 12,268,306.30, 18,402,459.45 and 4,190,403.10
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Solution
The fourth proportional to 12,268,306.30, 18,402,459.45 and 4,190,403.10 is: 6,285,604.65
Step by Step Solution
- Step 1: Write the proportion equation
12,268,306.30 : 18,402,459.45 = 4,190,403.10 : x - Step 2: Convert to fraction form
12,268,306.30/18,402,459.45 = 4,190,403.10/x - Step 3: Cross multiply
12,268,306.30x = 18,402,459.45 × 4,190,403.10 - Step 4: Simplify right side
12,268,306.30x = 77,113,723,126,904.30 - Step 5: Solve for x
x = 77,113,723,126,904.30/12,268,306.30 - Step 6: Final answer
x = 6,285,604.65
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Double scale
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Similar ratio
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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.