Finding the Fourth Proportional to 628,536.24, 868,394.79 and 438,398.46
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Solution
The fourth proportional to 628,536.24, 868,394.79 and 438,398.46 is: 605,697.67
Step by Step Solution
- Step 1: Write the proportion equation
628,536.24 : 868,394.79 = 438,398.46 : x - Step 2: Convert to fraction form
628,536.24/868,394.79 = 438,398.46/x - Step 3: Cross multiply
628,536.24x = 868,394.79 × 438,398.46 - Step 4: Simplify right side
628,536.24x = 380,702,938,608.02 - Step 5: Solve for x
x = 380,702,938,608.02/628,536.24 - Step 6: Final answer
x = 605,697.67
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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.