Finding the Fourth Proportional to 821,775.40, 1,134,028.29 and 459,202.23
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Solution
The fourth proportional to 821,775.40, 1,134,028.29 and 459,202.23 is: 633,686.92
Step by Step Solution
- Step 1: Write the proportion equation
821,775.40 : 1,134,028.29 = 459,202.23 : x - Step 2: Convert to fraction form
821,775.40/1,134,028.29 = 459,202.23/x - Step 3: Cross multiply
821,775.40x = 1,134,028.29 × 459,202.23 - Step 4: Simplify right side
821,775.40x = 520,748,319,651.09 - Step 5: Solve for x
x = 520,748,319,651.09/821,775.40 - Step 6: Final answer
x = 633,686.92
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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.