Finding the Fourth Proportional to 638,615.84, 881,244.70 and 352,129.80
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Solution
The fourth proportional to 638,615.84, 881,244.70 and 352,129.80 is: 485,914.22
Step by Step Solution
- Step 1: Write the proportion equation
638,615.84 : 881,244.70 = 352,129.80 : x - Step 2: Convert to fraction form
638,615.84/881,244.70 = 352,129.80/x - Step 3: Cross multiply
638,615.84x = 881,244.70 × 352,129.80 - Step 4: Simplify right side
638,615.84x = 310,312,519,962.06 - Step 5: Solve for x
x = 310,312,519,962.06/638,615.84 - Step 6: Final answer
x = 485,914.22
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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.