Finding the Fourth Proportional to 678,081.80, 1,017,122.69 and 528,434.05
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Solution
The fourth proportional to 678,081.80, 1,017,122.69 and 528,434.05 is: 792,651.06
Step by Step Solution
- Step 1: Write the proportion equation
678,081.80 : 1,017,122.69 = 528,434.05 : x - Step 2: Convert to fraction form
678,081.80/1,017,122.69 = 528,434.05/x - Step 3: Cross multiply
678,081.80x = 1,017,122.69 × 528,434.05 - Step 4: Simplify right side
678,081.80x = 537,482,261,201.87 - Step 5: Solve for x
x = 537,482,261,201.87/678,081.80 - Step 6: Final answer
x = 792,651.06
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.