Finding the Fourth Proportional to 819,643.80, 1,229,465.70 and 679,675.80
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Solution
The fourth proportional to 819,643.80, 1,229,465.70 and 679,675.80 is: 1,019,513.70
Step by Step Solution
- Step 1: Write the proportion equation
819,643.80 : 1,229,465.70 = 679,675.80 : x - Step 2: Convert to fraction form
819,643.80/1,229,465.70 = 679,675.80/x - Step 3: Cross multiply
819,643.80x = 1,229,465.70 × 679,675.80 - Step 4: Simplify right side
819,643.80x = 835,638,083,220.06 - Step 5: Solve for x
x = 835,638,083,220.06/819,643.80 - Step 6: Final answer
x = 1,019,513.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.