Finding the Fourth Proportional to 445,113.02, 613,921.11 and 309,147.14
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Solution
The fourth proportional to 445,113.02, 613,921.11 and 309,147.14 is: 426,390.48
Step by Step Solution
- Step 1: Write the proportion equation
445,113.02 : 613,921.11 = 309,147.14 : x - Step 2: Convert to fraction form
445,113.02/613,921.11 = 309,147.14/x - Step 3: Cross multiply
445,113.02x = 613,921.11 × 309,147.14 - Step 4: Simplify right side
445,113.02x = 189,791,955,342.13 - Step 5: Solve for x
x = 189,791,955,342.13/445,113.02 - Step 6: Final answer
x = 426,390.48
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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.