Finding the Fourth Proportional to 7,253,970.84, 10,010,479.69 and 3,990,715.53
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Solution
The fourth proportional to 7,253,970.84, 10,010,479.69 and 3,990,715.53 is: 5,507,187.40
Step by Step Solution
- Step 1: Write the proportion equation
7,253,970.84 : 10,010,479.69 = 3,990,715.53 : x - Step 2: Convert to fraction form
7,253,970.84/10,010,479.69 = 3,990,715.53/x - Step 3: Cross multiply
7,253,970.84x = 10,010,479.69 × 3,990,715.53 - Step 4: Simplify right side
7,253,970.84x = 39,948,976,804,160.28 - Step 5: Solve for x
x = 39,948,976,804,160.28/7,253,970.84 - Step 6: Final answer
x = 5,507,187.40
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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.