Finding the Fourth Proportional to 1,939,287,389.10, 2,909,339,626.05 and 629,087,137.26
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Solution
The fourth proportional to 1,939,287,389.10, 2,909,339,626.05 and 629,087,137.26 is: 943,763,233.32
Step by Step Solution
- Step 1: Write the proportion equation
1,939,287,389.10 : 2,909,339,626.05 = 629,087,137.26 : x - Step 2: Convert to fraction form
1,939,287,389.10/2,909,339,626.05 = 629,087,137.26/x - Step 3: Cross multiply
1,939,287,389.10x = 2,909,339,626.05 × 629,087,137.26 - Step 4: Simplify right side
1,939,287,389.10x = 1,830,228,136,668,873,472 - Step 5: Solve for x
x = 1,830,228,136,668,873,472/1,939,287,389.10 - Step 6: Final answer
x = 943,763,233.32
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.