Finding the Fourth Proportional to 8,220,756.60, 12,342,215.70 and 4,812,535.80
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Solution
The fourth proportional to 8,220,756.60, 12,342,215.70 and 4,812,535.80 is: 7,225,290.54
Step by Step Solution
- Step 1: Write the proportion equation
8,220,756.60 : 12,342,215.70 = 4,812,535.80 : x - Step 2: Convert to fraction form
8,220,756.60/12,342,215.70 = 4,812,535.80/x - Step 3: Cross multiply
8,220,756.60x = 12,342,215.70 × 4,812,535.80 - Step 4: Simplify right side
8,220,756.60x = 59,397,354,907,572.05 - Step 5: Solve for x
x = 59,397,354,907,572.05/8,220,756.60 - Step 6: Final answer
x = 7,225,290.54
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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.