Finding the Fourth Proportional to 1,458,126,141.38, 2,012,214,013.21 and 789,071,206.99
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Solution
The fourth proportional to 1,458,126,141.38, 2,012,214,013.21 and 789,071,206.99 is: 1,088,918,232.15
Step by Step Solution
- Step 1: Write the proportion equation
1,458,126,141.38 : 2,012,214,013.21 = 789,071,206.99 : x - Step 2: Convert to fraction form
1,458,126,141.38/2,012,214,013.21 = 789,071,206.99/x - Step 3: Cross multiply
1,458,126,141.38x = 2,012,214,013.21 × 789,071,206.99 - Step 4: Simplify right side
1,458,126,141.38x = 1,587,780,140,125,623,296 - Step 5: Solve for x
x = 1,587,780,140,125,623,296/1,458,126,141.38 - Step 6: Final answer
x = 1,088,918,232.15
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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.