Finding the Fourth Proportional to 663,966.24, 916,344.36 and 405,994.38
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Solution
The fourth proportional to 663,966.24, 916,344.36 and 405,994.38 is: 560,315.63
Step by Step Solution
- Step 1: Write the proportion equation
663,966.24 : 916,344.36 = 405,994.38 : x - Step 2: Convert to fraction form
663,966.24/916,344.36 = 405,994.38/x - Step 3: Cross multiply
663,966.24x = 916,344.36 × 405,994.38 - Step 4: Simplify right side
663,966.24x = 372,030,660,304.70 - Step 5: Solve for x
x = 372,030,660,304.70/663,966.24 - Step 6: Final answer
x = 560,315.63
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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.