Finding the Fourth Proportional to 1,431,289.53, 1,975,129.35 and 786,705.57
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Solution
The fourth proportional to 1,431,289.53, 1,975,129.35 and 786,705.57 is: 1,085,626.09
Step by Step Solution
- Step 1: Write the proportion equation
1,431,289.53 : 1,975,129.35 = 786,705.57 : x - Step 2: Convert to fraction form
1,431,289.53/1,975,129.35 = 786,705.57/x - Step 3: Cross multiply
1,431,289.53x = 1,975,129.35 × 786,705.57 - Step 4: Simplify right side
1,431,289.53x = 1,553,845,261,115.48 - Step 5: Solve for x
x = 1,553,845,261,115.48/1,431,289.53 - Step 6: Final answer
x = 1,085,626.09
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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.