Finding the Fourth Proportional to 909,647,002.20, 1,364,470,503.30 and 812,712,163.80
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Solution
The fourth proportional to 909,647,002.20, 1,364,470,503.30 and 812,712,163.80 is: 1,219,068,245.70
Step by Step Solution
- Step 1: Write the proportion equation
909,647,002.20 : 1,364,470,503.30 = 812,712,163.80 : x - Step 2: Convert to fraction form
909,647,002.20/1,364,470,503.30 = 812,712,163.80/x - Step 3: Cross multiply
909,647,002.20x = 1,364,470,503.30 × 812,712,163.80 - Step 4: Simplify right side
909,647,002.20x = 1,108,921,775,178,217,984 - Step 5: Solve for x
x = 1,108,921,775,178,217,984/909,647,002.20 - Step 6: Final answer
x = 1,219,068,245.70
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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.