Finding the Fourth Proportional to 885,739,473.20, 1,328,609,209.80 and 656,156,961.20
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Solution
The fourth proportional to 885,739,473.20, 1,328,609,209.80 and 656,156,961.20 is: 984,235,441.80
Step by Step Solution
- Step 1: Write the proportion equation
885,739,473.20 : 1,328,609,209.80 = 656,156,961.20 : x - Step 2: Convert to fraction form
885,739,473.20/1,328,609,209.80 = 656,156,961.20/x - Step 3: Cross multiply
885,739,473.20x = 1,328,609,209.80 × 656,156,961.20 - Step 4: Simplify right side
885,739,473.20x = 871,776,181,724,701,312 - Step 5: Solve for x
x = 871,776,181,724,701,312/885,739,473.20 - Step 6: Final answer
x = 984,235,441.80
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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.