Finding the Fourth Proportional to 403,564.68, 557,132.99 and 312,716.70
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Solution
The fourth proportional to 403,564.68, 557,132.99 and 312,716.70 is: 431,714.66
Step by Step Solution
- Step 1: Write the proportion equation
403,564.68 : 557,132.99 = 312,716.70 : x - Step 2: Convert to fraction form
403,564.68/557,132.99 = 312,716.70/x - Step 3: Cross multiply
403,564.68x = 557,132.99 × 312,716.70 - Step 4: Simplify right side
403,564.68x = 174,224,788,530.35 - Step 5: Solve for x
x = 174,224,788,530.35/403,564.68 - Step 6: Final answer
x = 431,714.66
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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.