Finding the Fourth Proportional to 8,197,811.70, 12,296,717.55 and 7,637,939.70
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Solution
The fourth proportional to 8,197,811.70, 12,296,717.55 and 7,637,939.70 is: 11,456,909.55
Step by Step Solution
- Step 1: Write the proportion equation
8,197,811.70 : 12,296,717.55 = 7,637,939.70 : x - Step 2: Convert to fraction form
8,197,811.70/12,296,717.55 = 7,637,939.70/x - Step 3: Cross multiply
8,197,811.70x = 12,296,717.55 × 7,637,939.70 - Step 4: Simplify right side
8,197,811.70x = 93,921,587,154,831.75 - Step 5: Solve for x
x = 93,921,587,154,831.75/8,197,811.70 - Step 6: Final answer
x = 11,456,909.55
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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.