Finding the Fourth Proportional to 863,206,961.76, 1,190,953,650.96 and 528,330,378.96
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Solution
The fourth proportional to 863,206,961.76, 1,190,953,650.96 and 528,330,378.96 is: 728,929,470.69
Step by Step Solution
- Step 1: Write the proportion equation
863,206,961.76 : 1,190,953,650.96 = 528,330,378.96 : x - Step 2: Convert to fraction form
863,206,961.76/1,190,953,650.96 = 528,330,378.96/x - Step 3: Cross multiply
863,206,961.76x = 1,190,953,650.96 × 528,330,378.96 - Step 4: Simplify right side
863,206,961.76x = 629,216,993,735,492,352 - Step 5: Solve for x
x = 629,216,993,735,492,352/863,206,961.76 - Step 6: Final answer
x = 728,929,470.69
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.