Finding the Fourth Proportional to 12,990,912.60, 19,486,368.90 and 4,016,371.80
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Solution
The fourth proportional to 12,990,912.60, 19,486,368.90 and 4,016,371.80 is: 6,024,557.70
Step by Step Solution
- Step 1: Write the proportion equation
12,990,912.60 : 19,486,368.90 = 4,016,371.80 : x - Step 2: Convert to fraction form
12,990,912.60/19,486,368.90 = 4,016,371.80/x - Step 3: Cross multiply
12,990,912.60x = 19,486,368.90 × 4,016,371.80 - Step 4: Simplify right side
12,990,912.60x = 78,264,502,534,357.02 - Step 5: Solve for x
x = 78,264,502,534,357.02/12,990,912.60 - Step 6: Final answer
x = 6,024,557.70
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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.