Finding the Fourth Proportional to 1,324,517,416.80, 1,986,776,125.20 and 404,274,181.20
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Solution
The fourth proportional to 1,324,517,416.80, 1,986,776,125.20 and 404,274,181.20 is: 606,411,271.80
Step by Step Solution
- Step 1: Write the proportion equation
1,324,517,416.80 : 1,986,776,125.20 = 404,274,181.20 : x - Step 2: Convert to fraction form
1,324,517,416.80/1,986,776,125.20 = 404,274,181.20/x - Step 3: Cross multiply
1,324,517,416.80x = 1,986,776,125.20 × 404,274,181.20 - Step 4: Simplify right side
1,324,517,416.80x = 803,202,291,242,938,624 - Step 5: Solve for x
x = 803,202,291,242,938,624/1,324,517,416.80 - Step 6: Final answer
x = 606,411,271.80
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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.