Finding the Fourth Proportional to 664,587.63, 917,119.19 and 378,101.57
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Solution
The fourth proportional to 664,587.63, 917,119.19 and 378,101.57 is: 521,773.49
Step by Step Solution
- Step 1: Write the proportion equation
664,587.63 : 917,119.19 = 378,101.57 : x - Step 2: Convert to fraction form
664,587.63/917,119.19 = 378,101.57/x - Step 3: Cross multiply
664,587.63x = 917,119.19 × 378,101.57 - Step 4: Simplify right side
664,587.63x = 346,764,205,616.13 - Step 5: Solve for x
x = 346,764,205,616.13/664,587.63 - Step 6: Final answer
x = 521,773.49
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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.