Finding the Fourth Proportional to 513,143.58, 708,107.58 and 283,687.08
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Solution
The fourth proportional to 513,143.58, 708,107.58 and 283,687.08 is: 391,471.28
Step by Step Solution
- Step 1: Write the proportion equation
513,143.58 : 708,107.58 = 283,687.08 : x - Step 2: Convert to fraction form
513,143.58/708,107.58 = 283,687.08/x - Step 3: Cross multiply
513,143.58x = 708,107.58 × 283,687.08 - Step 4: Simplify right side
513,143.58x = 200,880,971,696.07 - Step 5: Solve for x
x = 200,880,971,696.07/513,143.58 - Step 6: Final answer
x = 391,471.28
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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.