Finding the Fourth Proportional to 1,149,613,405.54, 1,586,467,138.51 and 620,977,396.76
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Solution
The fourth proportional to 1,149,613,405.54, 1,586,467,138.51 and 620,977,396.76 is: 856,949,152.62
Step by Step Solution
- Step 1: Write the proportion equation
1,149,613,405.54 : 1,586,467,138.51 = 620,977,396.76 : x - Step 2: Convert to fraction form
1,149,613,405.54/1,586,467,138.51 = 620,977,396.76/x - Step 3: Cross multiply
1,149,613,405.54x = 1,586,467,138.51 × 620,977,396.76 - Step 4: Simplify right side
1,149,613,405.54x = 985,160,233,721,488,768 - Step 5: Solve for x
x = 985,160,233,721,488,768/1,149,613,405.54 - Step 6: Final answer
x = 856,949,152.62
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1.5x scale
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.