Finding the Fourth Proportional to 1,327,736,503.49, 1,991,577,411.24 and 442,486,138.94
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Solution
The fourth proportional to 1,327,736,503.49, 1,991,577,411.24 and 442,486,138.94 is: 663,720,095.65
Step by Step Solution
- Step 1: Write the proportion equation
1,327,736,503.49 : 1,991,577,411.24 = 442,486,138.94 : x - Step 2: Convert to fraction form
1,327,736,503.49/1,991,577,411.24 = 442,486,138.94/x - Step 3: Cross multiply
1,327,736,503.49x = 1,991,577,411.24 × 442,486,138.94 - Step 4: Simplify right side
1,327,736,503.49x = 881,245,399,089,750,272 - Step 5: Solve for x
x = 881,245,399,089,750,272/1,327,736,503.49 - Step 6: Final answer
x = 663,720,095.65
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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.