Finding the Fourth Proportional to 745,302.42, 1,028,483.01 and 405,769.62
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Solution
The fourth proportional to 745,302.42, 1,028,483.01 and 405,769.62 is: 559,943.39
Step by Step Solution
- Step 1: Write the proportion equation
745,302.42 : 1,028,483.01 = 405,769.62 : x - Step 2: Convert to fraction form
745,302.42/1,028,483.01 = 405,769.62/x - Step 3: Cross multiply
745,302.42x = 1,028,483.01 × 405,769.62 - Step 4: Simplify right side
745,302.42x = 417,327,160,144.16 - Step 5: Solve for x
x = 417,327,160,144.16/745,302.42 - Step 6: Final answer
x = 559,943.39
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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.