Finding the Fourth Proportional to 4,805,216.80, 7,207,825.20 and 1,438,986.40
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Solution
The fourth proportional to 4,805,216.80, 7,207,825.20 and 1,438,986.40 is: 2,158,479.60
Step by Step Solution
- Step 1: Write the proportion equation
4,805,216.80 : 7,207,825.20 = 1,438,986.40 : x - Step 2: Convert to fraction form
4,805,216.80/7,207,825.20 = 1,438,986.40/x - Step 3: Cross multiply
4,805,216.80x = 7,207,825.20 × 1,438,986.40 - Step 4: Simplify right side
4,805,216.80x = 10,371,962,436,377.28 - Step 5: Solve for x
x = 10,371,962,436,377.28/4,805,216.80 - Step 6: Final answer
x = 2,158,479.60
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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.