Finding the Fourth Proportional to 642,842.11, 887,130.19 and 370,966.42
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Solution
The fourth proportional to 642,842.11, 887,130.19 and 370,966.42 is: 511,938.32
Step by Step Solution
- Step 1: Write the proportion equation
642,842.11 : 887,130.19 = 370,966.42 : x - Step 2: Convert to fraction form
642,842.11/887,130.19 = 370,966.42/x - Step 3: Cross multiply
642,842.11x = 887,130.19 × 370,966.42 - Step 4: Simplify right side
642,842.11x = 329,095,510,658.22 - Step 5: Solve for x
x = 329,095,510,658.22/642,842.11 - Step 6: Final answer
x = 511,938.32
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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.