Finding the Fourth Proportional to 626,916.76, 865,198.74 and 355,032.70
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Solution
The fourth proportional to 626,916.76, 865,198.74 and 355,032.70 is: 489,975.49
Step by Step Solution
- Step 1: Write the proportion equation
626,916.76 : 865,198.74 = 355,032.70 : x - Step 2: Convert to fraction form
626,916.76/865,198.74 = 355,032.70/x - Step 3: Cross multiply
626,916.76x = 865,198.74 × 355,032.70 - Step 4: Simplify right side
626,916.76x = 307,173,844,698.80 - Step 5: Solve for x
x = 307,173,844,698.80/626,916.76 - Step 6: Final answer
x = 489,975.49
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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.