Finding the Fourth Proportional to 1,431,438.48, 1,975,409.64 and 786,885.84
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Solution
The fourth proportional to 1,431,438.48, 1,975,409.64 and 786,885.84 is: 1,085,915.95
Step by Step Solution
- Step 1: Write the proportion equation
1,431,438.48 : 1,975,409.64 = 786,885.84 : x - Step 2: Convert to fraction form
1,431,438.48/1,975,409.64 = 786,885.84/x - Step 3: Cross multiply
1,431,438.48x = 1,975,409.64 × 786,885.84 - Step 4: Simplify right side
1,431,438.48x = 1,554,421,873,915.50 - Step 5: Solve for x
x = 1,554,421,873,915.50/1,431,438.48 - Step 6: Final answer
x = 1,085,915.95
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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.