Finding the Fourth Proportional to 642,126.30, 886,729.95 and 480,701.09
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Solution
The fourth proportional to 642,126.30, 886,729.95 and 480,701.09 is: 663,813.42
Step by Step Solution
- Step 1: Write the proportion equation
642,126.30 : 886,729.95 = 480,701.09 : x - Step 2: Convert to fraction form
642,126.30/886,729.95 = 480,701.09/x - Step 3: Cross multiply
642,126.30x = 886,729.95 × 480,701.09 - Step 4: Simplify right side
642,126.30x = 426,252,055,717.47 - Step 5: Solve for x
x = 426,252,055,717.47/642,126.30 - Step 6: Final answer
x = 663,813.42
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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.