Finding the Fourth Proportional to 1,211,203,373.05, 1,817,128,035.12 and 434,855,759.80
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Solution
The fourth proportional to 1,211,203,373.05, 1,817,128,035.12 and 434,855,759.80 is: 652,399,596.92
Step by Step Solution
- Step 1: Write the proportion equation
1,211,203,373.05 : 1,817,128,035.12 = 434,855,759.80 : x - Step 2: Convert to fraction form
1,211,203,373.05/1,817,128,035.12 = 434,855,759.80/x - Step 3: Cross multiply
1,211,203,373.05x = 1,817,128,035.12 × 434,855,759.80 - Step 4: Simplify right side
1,211,203,373.05x = 790,188,592,365,988,608 - Step 5: Solve for x
x = 790,188,592,365,988,608/1,211,203,373.05 - Step 6: Final answer
x = 652,399,596.92
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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.