Finding the Fourth Proportional to 665,639.10, 997,802.55 and 328,403.70
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Solution
The fourth proportional to 665,639.10, 997,802.55 and 328,403.70 is: 492,281.85
Step by Step Solution
- Step 1: Write the proportion equation
665,639.10 : 997,802.55 = 328,403.70 : x - Step 2: Convert to fraction form
665,639.10/997,802.55 = 328,403.70/x - Step 3: Cross multiply
665,639.10x = 997,802.55 × 328,403.70 - Step 4: Simplify right side
665,639.10x = 327,682,049,289.44 - Step 5: Solve for x
x = 327,682,049,289.44/665,639.10 - Step 6: Final answer
x = 492,281.85
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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.