Finding the Fourth Proportional to 853,128.54, 1,177,325.46 and 485,587.74
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Solution
The fourth proportional to 853,128.54, 1,177,325.46 and 485,587.74 is: 670,115.68
Step by Step Solution
- Step 1: Write the proportion equation
853,128.54 : 1,177,325.46 = 485,587.74 : x - Step 2: Convert to fraction form
853,128.54/1,177,325.46 = 485,587.74/x - Step 3: Cross multiply
853,128.54x = 1,177,325.46 × 485,587.74 - Step 4: Simplify right side
853,128.54x = 571,694,809,365.86 - Step 5: Solve for x
x = 571,694,809,365.86/853,128.54 - Step 6: Final answer
x = 670,115.68
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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.