Finding the Fourth Proportional to 885,739,458.70, 1,328,609,188.05 and 656,156,946.70
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Solution
The fourth proportional to 885,739,458.70, 1,328,609,188.05 and 656,156,946.70 is: 984,235,420.05
Step by Step Solution
- Step 1: Write the proportion equation
885,739,458.70 : 1,328,609,188.05 = 656,156,946.70 : x - Step 2: Convert to fraction form
885,739,458.70/1,328,609,188.05 = 656,156,946.70/x - Step 3: Cross multiply
885,739,458.70x = 1,328,609,188.05 × 656,156,946.70 - Step 4: Simplify right side
885,739,458.70x = 871,776,148,188,454,144 - Step 5: Solve for x
x = 871,776,148,188,454,144/885,739,458.70 - Step 6: Final answer
x = 984,235,420.05
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Double scale
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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.