Finding the Fourth Proportional to 556,628.84, 768,220.15 and 311,706.84
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Solution
The fourth proportional to 556,628.84, 768,220.15 and 311,706.84 is: 430,195.96
Step by Step Solution
- Step 1: Write the proportion equation
556,628.84 : 768,220.15 = 311,706.84 : x - Step 2: Convert to fraction form
556,628.84/768,220.15 = 311,706.84/x - Step 3: Cross multiply
556,628.84x = 768,220.15 × 311,706.84 - Step 4: Simplify right side
556,628.84x = 239,459,475,906.22 - Step 5: Solve for x
x = 239,459,475,906.22/556,628.84 - Step 6: Final answer
x = 430,195.96
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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.