Finding the Fourth Proportional to 1,107,622,125.54, 1,528,989,177.38 and 690,140,676.38
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Solution
The fourth proportional to 1,107,622,125.54, 1,528,989,177.38 and 690,140,676.38 is: 952,687,383.82
Step by Step Solution
- Step 1: Write the proportion equation
1,107,622,125.54 : 1,528,989,177.38 = 690,140,676.38 : x - Step 2: Convert to fraction form
1,107,622,125.54/1,528,989,177.38 = 690,140,676.38/x - Step 3: Cross multiply
1,107,622,125.54x = 1,528,989,177.38 × 690,140,676.38 - Step 4: Simplify right side
1,107,622,125.54x = 1,055,217,625,043,637,376 - Step 5: Solve for x
x = 1,055,217,625,043,637,376/1,107,622,125.54 - Step 6: Final answer
x = 952,687,383.82
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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.