Finding the Fourth Proportional to 7,198,221.47, 9,880,670.20 and 6,364,154.35
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Solution
The fourth proportional to 7,198,221.47, 9,880,670.20 and 6,364,154.35 is: 8,735,784.31
Step by Step Solution
- Step 1: Write the proportion equation
7,198,221.47 : 9,880,670.20 = 6,364,154.35 : x - Step 2: Convert to fraction form
7,198,221.47/9,880,670.20 = 6,364,154.35/x - Step 3: Cross multiply
7,198,221.47x = 9,880,670.20 × 6,364,154.35 - Step 4: Simplify right side
7,198,221.47x = 62,882,110,193,633.31 - Step 5: Solve for x
x = 62,882,110,193,633.31/7,198,221.47 - Step 6: Final answer
x = 8,735,784.31
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.