Finding the Fourth Proportional to 636,072.09, 877,781.39 and 349,621.53
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Solution
The fourth proportional to 636,072.09, 877,781.39 and 349,621.53 is: 482,478.76
Step by Step Solution
- Step 1: Write the proportion equation
636,072.09 : 877,781.39 = 349,621.53 : x - Step 2: Convert to fraction form
636,072.09/877,781.39 = 349,621.53/x - Step 3: Cross multiply
636,072.09x = 877,781.39 × 349,621.53 - Step 4: Simplify right side
636,072.09x = 306,891,270,829.22 - Step 5: Solve for x
x = 306,891,270,829.22/636,072.09 - Step 6: Final answer
x = 482,478.76
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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.