Finding the Fourth Proportional to 1,389,622, 2,069,248.76 and 1,338,548.80
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Solution
The fourth proportional to 1,389,622, 2,069,248.76 and 1,338,548.80 is: 1,993,197.03
Step by Step Solution
- Step 1: Write the proportion equation
1,389,622 : 2,069,248.76 = 1,338,548.80 : x - Step 2: Convert to fraction form
1,389,622/2,069,248.76 = 1,338,548.80/x - Step 3: Cross multiply
1,389,622x = 2,069,248.76 × 1,338,548.80 - Step 4: Simplify right side
1,389,622x = 2,769,790,444,599.49 - Step 5: Solve for x
x = 2,769,790,444,599.49/1,389,622 - Step 6: Final answer
x = 1,993,197.03
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.