Finding the Fourth Proportional to 1,107,218,704.60, 1,660,828,056.90 and 646,919,939.80
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Solution
The fourth proportional to 1,107,218,704.60, 1,660,828,056.90 and 646,919,939.80 is: 970,379,909.70
Step by Step Solution
- Step 1: Write the proportion equation
1,107,218,704.60 : 1,660,828,056.90 = 646,919,939.80 : x - Step 2: Convert to fraction form
1,107,218,704.60/1,660,828,056.90 = 646,919,939.80/x - Step 3: Cross multiply
1,107,218,704.60x = 1,660,828,056.90 × 646,919,939.80 - Step 4: Simplify right side
1,107,218,704.60x = 1,074,422,786,587,899,008 - Step 5: Solve for x
x = 1,074,422,786,587,899,008/1,107,218,704.60 - Step 6: Final answer
x = 970,379,909.70
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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.