Finding the Fourth Proportional to 678,511.80, 1,017,767.70 and 235,279.80
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Solution
The fourth proportional to 678,511.80, 1,017,767.70 and 235,279.80 is: 352,919.70
Step by Step Solution
- Step 1: Write the proportion equation
678,511.80 : 1,017,767.70 = 235,279.80 : x - Step 2: Convert to fraction form
678,511.80/1,017,767.70 = 235,279.80/x - Step 3: Cross multiply
678,511.80x = 1,017,767.70 × 235,279.80 - Step 4: Simplify right side
678,511.80x = 239,460,180,902.46 - Step 5: Solve for x
x = 239,460,180,902.46/678,511.80 - Step 6: Final answer
x = 352,919.70
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1.5x scale
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.