Finding the Fourth Proportional to 813,583,624.40, 1,220,375,436.60 and 724,402,235.60
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Solution
The fourth proportional to 813,583,624.40, 1,220,375,436.60 and 724,402,235.60 is: 1,086,603,353.40
Step by Step Solution
- Step 1: Write the proportion equation
813,583,624.40 : 1,220,375,436.60 = 724,402,235.60 : x - Step 2: Convert to fraction form
813,583,624.40/1,220,375,436.60 = 724,402,235.60/x - Step 3: Cross multiply
813,583,624.40x = 1,220,375,436.60 × 724,402,235.60 - Step 4: Simplify right side
813,583,624.40x = 884,042,694,544,366,080 - Step 5: Solve for x
x = 884,042,694,544,366,080/813,583,624.40 - Step 6: Final answer
x = 1,086,603,353.40
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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.