Finding the Fourth Proportional to 885,739,417.20, 1,328,609,125.80 and 656,156,905.20
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Solution
The fourth proportional to 885,739,417.20, 1,328,609,125.80 and 656,156,905.20 is: 984,235,357.80
Step by Step Solution
- Step 1: Write the proportion equation
885,739,417.20 : 1,328,609,125.80 = 656,156,905.20 : x - Step 2: Convert to fraction form
885,739,417.20/1,328,609,125.80 = 656,156,905.20/x - Step 3: Cross multiply
885,739,417.20x = 1,328,609,125.80 × 656,156,905.20 - Step 4: Simplify right side
885,739,417.20x = 871,776,052,205,405,568 - Step 5: Solve for x
x = 871,776,052,205,405,568/885,739,417.20 - Step 6: Final answer
x = 984,235,357.80
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Similar ratio
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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.