Finding the Fourth Proportional to 743,913.68, 1,026,606.84 and 404,381.12
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Solution
The fourth proportional to 743,913.68, 1,026,606.84 and 404,381.12 is: 558,049.19
Step by Step Solution
- Step 1: Write the proportion equation
743,913.68 : 1,026,606.84 = 404,381.12 : x - Step 2: Convert to fraction form
743,913.68/1,026,606.84 = 404,381.12/x - Step 3: Cross multiply
743,913.68x = 1,026,606.84 × 404,381.12 - Step 4: Simplify right side
743,913.68x = 415,140,423,758.86 - Step 5: Solve for x
x = 415,140,423,758.86/743,913.68 - Step 6: Final answer
x = 558,049.19
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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.