Finding the Fourth Proportional to 1,643,785.58, 2,268,419.70 and 918,632.67
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Solution
The fourth proportional to 1,643,785.58, 2,268,419.70 and 918,632.67 is: 1,267,710.63
Step by Step Solution
- Step 1: Write the proportion equation
1,643,785.58 : 2,268,419.70 = 918,632.67 : x - Step 2: Convert to fraction form
1,643,785.58/2,268,419.70 = 918,632.67/x - Step 3: Cross multiply
1,643,785.58x = 2,268,419.70 × 918,632.67 - Step 4: Simplify right side
1,643,785.58x = 2,083,844,445,691.60 - Step 5: Solve for x
x = 2,083,844,445,691.60/1,643,785.58 - Step 6: Final answer
x = 1,267,710.63
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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.