Finding the Fourth Proportional to 885,735,986.70, 1,328,603,980.05 and 303,276,650.70
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Solution
The fourth proportional to 885,735,986.70, 1,328,603,980.05 and 303,276,650.70 is: 454,914,976.05
Step by Step Solution
- Step 1: Write the proportion equation
885,735,986.70 : 1,328,603,980.05 = 303,276,650.70 : x - Step 2: Convert to fraction form
885,735,986.70/1,328,603,980.05 = 303,276,650.70/x - Step 3: Cross multiply
885,735,986.70x = 1,328,603,980.05 × 303,276,650.70 - Step 4: Simplify right side
885,735,986.70x = 402,934,565,176,253,568 - Step 5: Solve for x
x = 402,934,565,176,253,568/885,735,986.70 - Step 6: Final answer
x = 454,914,976.05
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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.