Finding the Fourth Proportional to 6,912,416.70, 10,368,625.05 and 6,660,474.30
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Solution
The fourth proportional to 6,912,416.70, 10,368,625.05 and 6,660,474.30 is: 9,990,711.45
Step by Step Solution
- Step 1: Write the proportion equation
6,912,416.70 : 10,368,625.05 = 6,660,474.30 : x - Step 2: Convert to fraction form
6,912,416.70/10,368,625.05 = 6,660,474.30/x - Step 3: Cross multiply
6,912,416.70x = 10,368,625.05 × 6,660,474.30 - Step 4: Simplify right side
6,912,416.70x = 69,059,960,671,861.22 - Step 5: Solve for x
x = 69,059,960,671,861.22/6,912,416.70 - Step 6: Final answer
x = 9,990,711.45
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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.