Finding the Fourth Proportional to 916,640.18, 1,264,944.42 and 508,718.34
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Solution
The fourth proportional to 916,640.18, 1,264,944.42 and 508,718.34 is: 702,020.75
Step by Step Solution
- Step 1: Write the proportion equation
916,640.18 : 1,264,944.42 = 508,718.34 : x - Step 2: Convert to fraction form
916,640.18/1,264,944.42 = 508,718.34/x - Step 3: Cross multiply
916,640.18x = 1,264,944.42 × 508,718.34 - Step 4: Simplify right side
916,640.18x = 643,500,425,534.66 - Step 5: Solve for x
x = 643,500,425,534.66/916,640.18 - Step 6: Final answer
x = 702,020.75
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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.