Finding the Fourth Proportional to 1,585,609,687.80, 2,378,414,531.70 and 436,752,343.80
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Solution
The fourth proportional to 1,585,609,687.80, 2,378,414,531.70 and 436,752,343.80 is: 655,128,515.70
Step by Step Solution
- Step 1: Write the proportion equation
1,585,609,687.80 : 2,378,414,531.70 = 436,752,343.80 : x - Step 2: Convert to fraction form
1,585,609,687.80/2,378,414,531.70 = 436,752,343.80/x - Step 3: Cross multiply
1,585,609,687.80x = 2,378,414,531.70 × 436,752,343.80 - Step 4: Simplify right side
1,585,609,687.80x = 1,038,778,121,247,954,304 - Step 5: Solve for x
x = 1,038,778,121,247,954,304/1,585,609,687.80 - Step 6: Final answer
x = 655,128,515.70
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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.