Finding the Fourth Proportional to 7,158,454.36, 9,878,668.14 and 3,939,190.36
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Solution
The fourth proportional to 7,158,454.36, 9,878,668.14 and 3,939,190.36 is: 5,436,083.31
Step by Step Solution
- Step 1: Write the proportion equation
7,158,454.36 : 9,878,668.14 = 3,939,190.36 : x - Step 2: Convert to fraction form
7,158,454.36/9,878,668.14 = 3,939,190.36/x - Step 3: Cross multiply
7,158,454.36x = 9,878,668.14 × 3,939,190.36 - Step 4: Simplify right side
7,158,454.36x = 38,913,954,306,727.13 - Step 5: Solve for x
x = 38,913,954,306,727.13/7,158,454.36 - Step 6: Final answer
x = 5,436,083.31
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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.