Finding the Fourth Proportional to 745,074.68, 1,028,213.80 and 418,458.35
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Solution
The fourth proportional to 745,074.68, 1,028,213.80 and 418,458.35 is: 577,478.56
Step by Step Solution
- Step 1: Write the proportion equation
745,074.68 : 1,028,213.80 = 418,458.35 : x - Step 2: Convert to fraction form
745,074.68/1,028,213.80 = 418,458.35/x - Step 3: Cross multiply
745,074.68x = 1,028,213.80 × 418,458.35 - Step 4: Simplify right side
745,074.68x = 430,264,651,719.62 - Step 5: Solve for x
x = 430,264,651,719.62/745,074.68 - Step 6: Final answer
x = 577,478.56
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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.