Finding the Fourth Proportional to 853,816.10, 1,178,220.75 and 471,820.10
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Solution
The fourth proportional to 853,816.10, 1,178,220.75 and 471,820.10 is: 651,086.61
Step by Step Solution
- Step 1: Write the proportion equation
853,816.10 : 1,178,220.75 = 471,820.10 : x - Step 2: Convert to fraction form
853,816.10/1,178,220.75 = 471,820.10/x - Step 3: Cross multiply
853,816.10x = 1,178,220.75 × 471,820.10 - Step 4: Simplify right side
853,816.10x = 555,908,232,087.08 - Step 5: Solve for x
x = 555,908,232,087.08/853,816.10 - Step 6: Final answer
x = 651,086.61
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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.