Finding the Fourth Proportional to 389,759.17, 538,239.09 and 368,531.53
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Solution
The fourth proportional to 389,759.17, 538,239.09 and 368,531.53 is: 508,924.72
Step by Step Solution
- Step 1: Write the proportion equation
389,759.17 : 538,239.09 = 368,531.53 : x - Step 2: Convert to fraction form
389,759.17/538,239.09 = 368,531.53/x - Step 3: Cross multiply
389,759.17x = 538,239.09 × 368,531.53 - Step 4: Simplify right side
389,759.17x = 198,358,075,343.51 - Step 5: Solve for x
x = 198,358,075,343.51/389,759.17 - Step 6: Final answer
x = 508,924.72
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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.