Finding the Fourth Proportional to 876,284,324.40, 1,209,267,971.64 and 479,800,115.76
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Solution
The fourth proportional to 876,284,324.40, 1,209,267,971.64 and 479,800,115.76 is: 662,121,752.75
Step by Step Solution
- Step 1: Write the proportion equation
876,284,324.40 : 1,209,267,971.64 = 479,800,115.76 : x - Step 2: Convert to fraction form
876,284,324.40/1,209,267,971.64 = 479,800,115.76/x - Step 3: Cross multiply
876,284,324.40x = 1,209,267,971.64 × 479,800,115.76 - Step 4: Simplify right side
876,284,324.40x = 580,206,912,777,732,480 - Step 5: Solve for x
x = 580,206,912,777,732,480/876,284,324.40 - Step 6: Final answer
x = 662,121,752.75
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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.