Finding the Fourth Proportional to 1,987,376.70, 2,742,579.80 and 1,081,958.70
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Solution
The fourth proportional to 1,987,376.70, 2,742,579.80 and 1,081,958.70 is: 1,493,102.98
Step by Step Solution
- Step 1: Write the proportion equation
1,987,376.70 : 2,742,579.80 = 1,081,958.70 : x - Step 2: Convert to fraction form
1,987,376.70/2,742,579.80 = 1,081,958.70/x - Step 3: Cross multiply
1,987,376.70x = 2,742,579.80 × 1,081,958.70 - Step 4: Simplify right side
1,987,376.70x = 2,967,358,075,054.26 - Step 5: Solve for x
x = 2,967,358,075,054.26/1,987,376.70 - Step 6: Final answer
x = 1,493,102.98
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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.