Finding the Fourth Proportional to 1,261,453,501.80, 1,892,180,252.70 and 744,892,849.80
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Solution
The fourth proportional to 1,261,453,501.80, 1,892,180,252.70 and 744,892,849.80 is: 1,117,339,274.70
Step by Step Solution
- Step 1: Write the proportion equation
1,261,453,501.80 : 1,892,180,252.70 = 744,892,849.80 : x - Step 2: Convert to fraction form
1,261,453,501.80/1,892,180,252.70 = 744,892,849.80/x - Step 3: Cross multiply
1,261,453,501.80x = 1,892,180,252.70 × 744,892,849.80 - Step 4: Simplify right side
1,261,453,501.80x = 1,409,471,540,768,987,136 - Step 5: Solve for x
x = 1,409,471,540,768,987,136/1,261,453,501.80 - Step 6: Final answer
x = 1,117,339,274.70
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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.