Finding the Fourth Proportional to 812,081.97, 1,120,415.49 and 472,484.61
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Solution
The fourth proportional to 812,081.97, 1,120,415.49 and 472,484.61 is: 651,878.87
Step by Step Solution
- Step 1: Write the proportion equation
812,081.97 : 1,120,415.49 = 472,484.61 : x - Step 2: Convert to fraction form
812,081.97/1,120,415.49 = 472,484.61/x - Step 3: Cross multiply
812,081.97x = 1,120,415.49 × 472,484.61 - Step 4: Simplify right side
812,081.97x = 529,379,075,830.61 - Step 5: Solve for x
x = 529,379,075,830.61/812,081.97 - Step 6: Final answer
x = 651,878.87
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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.