Finding the Fourth Proportional to 513,146.16, 708,139.94 and 286,791.66
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Solution
The fourth proportional to 513,146.16, 708,139.94 and 286,791.66 is: 395,771.50
Step by Step Solution
- Step 1: Write the proportion equation
513,146.16 : 708,139.94 = 286,791.66 : x - Step 2: Convert to fraction form
513,146.16/708,139.94 = 286,791.66/x - Step 3: Cross multiply
513,146.16x = 708,139.94 × 286,791.66 - Step 4: Simplify right side
513,146.16x = 203,088,627,470.94 - Step 5: Solve for x
x = 203,088,627,470.94/513,146.16 - Step 6: Final answer
x = 395,771.50
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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.