Finding the Fourth Proportional to 816,729,139.20, 1,225,572,005.70 and 299,211,893.40
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Solution
The fourth proportional to 816,729,139.20, 1,225,572,005.70 and 299,211,893.40 is: 448,993,066.03
Step by Step Solution
- Step 1: Write the proportion equation
816,729,139.20 : 1,225,572,005.70 = 299,211,893.40 : x - Step 2: Convert to fraction form
816,729,139.20/1,225,572,005.70 = 299,211,893.40/x - Step 3: Cross multiply
816,729,139.20x = 1,225,572,005.70 × 299,211,893.40 - Step 4: Simplify right side
816,729,139.20x = 366,705,720,323,532,608 - Step 5: Solve for x
x = 366,705,720,323,532,608/816,729,139.20 - Step 6: Final answer
x = 448,993,066.03
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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.