Finding the Fourth Proportional to 877,820.09, 1,211,391.72 and 475,412.09
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Solution
The fourth proportional to 877,820.09, 1,211,391.72 and 475,412.09 is: 656,068.68
Step by Step Solution
- Step 1: Write the proportion equation
877,820.09 : 1,211,391.72 = 475,412.09 : x - Step 2: Convert to fraction form
877,820.09/1,211,391.72 = 475,412.09/x - Step 3: Cross multiply
877,820.09x = 1,211,391.72 × 475,412.09 - Step 4: Simplify right side
877,820.09x = 575,910,263,356.94 - Step 5: Solve for x
x = 575,910,263,356.94/877,820.09 - Step 6: Final answer
x = 656,068.68
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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.