Finding the Fourth Proportional to 870,187,105.70, 1,305,280,658.55 and 295,758,433.70
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Solution
The fourth proportional to 870,187,105.70, 1,305,280,658.55 and 295,758,433.70 is: 443,637,650.55
Step by Step Solution
- Step 1: Write the proportion equation
870,187,105.70 : 1,305,280,658.55 = 295,758,433.70 : x - Step 2: Convert to fraction form
870,187,105.70/1,305,280,658.55 = 295,758,433.70/x - Step 3: Cross multiply
870,187,105.70x = 1,305,280,658.55 × 295,758,433.70 - Step 4: Simplify right side
870,187,105.70x = 386,047,763,111,652,480 - Step 5: Solve for x
x = 386,047,763,111,652,480/870,187,105.70 - Step 6: Final answer
x = 443,637,650.55
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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.