Finding the Fourth Proportional to 916,638.06, 1,264,941.49 and 508,716.21
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Solution
The fourth proportional to 916,638.06, 1,264,941.49 and 508,716.21 is: 702,017.81
Step by Step Solution
- Step 1: Write the proportion equation
916,638.06 : 1,264,941.49 = 508,716.21 : x - Step 2: Convert to fraction form
916,638.06/1,264,941.49 = 508,716.21/x - Step 3: Cross multiply
916,638.06x = 1,264,941.49 × 508,716.21 - Step 4: Simplify right side
916,638.06x = 643,496,240,664.55 - Step 5: Solve for x
x = 643,496,240,664.55/916,638.06 - Step 6: Final answer
x = 702,017.81
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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.