Finding the Fourth Proportional to 7,102,719.09, 9,802,712.34 and 4,005,878.49
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Solution
The fourth proportional to 7,102,719.09, 9,802,712.34 and 4,005,878.49 is: 5,528,653.75
Step by Step Solution
- Step 1: Write the proportion equation
7,102,719.09 : 9,802,712.34 = 4,005,878.49 : x - Step 2: Convert to fraction form
7,102,719.09/9,802,712.34 = 4,005,878.49/x - Step 3: Cross multiply
7,102,719.09x = 9,802,712.34 × 4,005,878.49 - Step 4: Simplify right side
7,102,719.09x = 39,268,474,506,463.57 - Step 5: Solve for x
x = 39,268,474,506,463.57/7,102,719.09 - Step 6: Final answer
x = 5,528,653.75
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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.