Finding the Fourth Proportional to 5,390,307.47, 7,438,585.80 and 2,942,918.44
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Solution
The fourth proportional to 5,390,307.47, 7,438,585.80 and 2,942,918.44 is: 4,061,206.42
Step by Step Solution
- Step 1: Write the proportion equation
5,390,307.47 : 7,438,585.80 = 2,942,918.44 : x - Step 2: Convert to fraction form
5,390,307.47/7,438,585.80 = 2,942,918.44/x - Step 3: Cross multiply
5,390,307.47x = 7,438,585.80 × 2,942,918.44 - Step 4: Simplify right side
5,390,307.47x = 21,891,151,299,745.69 - Step 5: Solve for x
x = 21,891,151,299,745.69/5,390,307.47 - Step 6: Final answer
x = 4,061,206.42
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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.