Finding the Fourth Proportional to 1,607,212,815.99, 2,217,453,302.70 and 928,782,607.43
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Solution
The fourth proportional to 1,607,212,815.99, 2,217,453,302.70 and 928,782,607.43 is: 1,281,430,834.69
Step by Step Solution
- Step 1: Write the proportion equation
1,607,212,815.99 : 2,217,453,302.70 = 928,782,607.43 : x - Step 2: Convert to fraction form
1,607,212,815.99/2,217,453,302.70 = 928,782,607.43/x - Step 3: Cross multiply
1,607,212,815.99x = 2,217,453,302.70 × 928,782,607.43 - Step 4: Simplify right side
1,607,212,815.99x = 2,059,532,060,324,883,456 - Step 5: Solve for x
x = 2,059,532,060,324,883,456/1,607,212,815.99 - Step 6: Final answer
x = 1,281,430,834.69
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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.