Finding the Fourth Proportional to 785,442.60, 1,178,163.90 and 727,705.80
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Solution
The fourth proportional to 785,442.60, 1,178,163.90 and 727,705.80 is: 1,091,558.70
Step by Step Solution
- Step 1: Write the proportion equation
785,442.60 : 1,178,163.90 = 727,705.80 : x - Step 2: Convert to fraction form
785,442.60/1,178,163.90 = 727,705.80/x - Step 3: Cross multiply
785,442.60x = 1,178,163.90 × 727,705.80 - Step 4: Simplify right side
785,442.60x = 857,356,703,380.62 - Step 5: Solve for x
x = 857,356,703,380.62/785,442.60 - Step 6: Final answer
x = 1,091,558.70
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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.