Finding the Fourth Proportional to 1,427,330.15, 1,969,706.53 and 815,669.99
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Solution
The fourth proportional to 1,427,330.15, 1,969,706.53 and 815,669.99 is: 1,125,619.40
Step by Step Solution
- Step 1: Write the proportion equation
1,427,330.15 : 1,969,706.53 = 815,669.99 : x - Step 2: Convert to fraction form
1,427,330.15/1,969,706.53 = 815,669.99/x - Step 3: Cross multiply
1,427,330.15x = 1,969,706.53 × 815,669.99 - Step 4: Simplify right side
1,427,330.15x = 1,606,630,505,628.03 - Step 5: Solve for x
x = 1,606,630,505,628.03/1,427,330.15 - Step 6: Final answer
x = 1,125,619.40
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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.