Finding the Fourth Proportional to 660,028.18, 990,458.74 and 280,948.31
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Solution
The fourth proportional to 660,028.18, 990,458.74 and 280,948.31 is: 421,599.74
Step by Step Solution
- Step 1: Write the proportion equation
660,028.18 : 990,458.74 = 280,948.31 : x - Step 2: Convert to fraction form
660,028.18/990,458.74 = 280,948.31/x - Step 3: Cross multiply
660,028.18x = 990,458.74 × 280,948.31 - Step 4: Simplify right side
660,028.18x = 278,267,704,877.81 - Step 5: Solve for x
x = 278,267,704,877.81/660,028.18 - Step 6: Final answer
x = 421,599.74
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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.