Finding the Fourth Proportional to 8,220,659.20, 12,330,374.40 and 3,427,110.40
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Solution
The fourth proportional to 8,220,659.20, 12,330,374.40 and 3,427,110.40 is: 5,140,409.46
Step by Step Solution
- Step 1: Write the proportion equation
8,220,659.20 : 12,330,374.40 = 3,427,110.40 : x - Step 2: Convert to fraction form
8,220,659.20/12,330,374.40 = 3,427,110.40/x - Step 3: Cross multiply
8,220,659.20x = 12,330,374.40 × 3,427,110.40 - Step 4: Simplify right side
8,220,659.20x = 42,257,554,342,133.76 - Step 5: Solve for x
x = 42,257,554,342,133.76/8,220,659.20 - Step 6: Final answer
x = 5,140,409.46
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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.