Finding the Fourth Proportional to 2,129,487.99, 2,938,244.32 and 1,354,839.09
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Solution
The fourth proportional to 2,129,487.99, 2,938,244.32 and 1,354,839.09 is: 1,869,392.21
Step by Step Solution
- Step 1: Write the proportion equation
2,129,487.99 : 2,938,244.32 = 1,354,839.09 : x - Step 2: Convert to fraction form
2,129,487.99/2,938,244.32 = 1,354,839.09/x - Step 3: Cross multiply
2,129,487.99x = 2,938,244.32 × 1,354,839.09 - Step 4: Simplify right side
2,129,487.99x = 3,980,848,260,706.47 - Step 5: Solve for x
x = 3,980,848,260,706.47/2,129,487.99 - Step 6: Final answer
x = 1,869,392.21
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.