Finding the Fourth Proportional to 745,147.84, 1,028,277.84 and 405,608.80
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Solution
The fourth proportional to 745,147.84, 1,028,277.84 and 405,608.80 is: 559,725.89
Step by Step Solution
- Step 1: Write the proportion equation
745,147.84 : 1,028,277.84 = 405,608.80 : x - Step 2: Convert to fraction form
745,147.84/1,028,277.84 = 405,608.80/x - Step 3: Cross multiply
745,147.84x = 1,028,277.84 × 405,608.80 - Step 4: Simplify right side
745,147.84x = 417,078,540,748.99 - Step 5: Solve for x
x = 417,078,540,748.99/745,147.84 - Step 6: Final answer
x = 559,725.89
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1.5x scale
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.