Finding the Fourth Proportional to 745,392.38, 1,028,641.48 and 405,860.63
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Solution
The fourth proportional to 745,392.38, 1,028,641.48 and 405,860.63 is: 560,087.66
Step by Step Solution
- Step 1: Write the proportion equation
745,392.38 : 1,028,641.48 = 405,860.63 : x - Step 2: Convert to fraction form
745,392.38/1,028,641.48 = 405,860.63/x - Step 3: Cross multiply
745,392.38x = 1,028,641.48 × 405,860.63 - Step 4: Simplify right side
745,392.38x = 417,485,072,959.07 - Step 5: Solve for x
x = 417,485,072,959.07/745,392.38 - Step 6: Final answer
x = 560,087.66
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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.