Finding the Fourth Proportional to 516,391.35, 712,605.80 and 286,942.70
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Solution
The fourth proportional to 516,391.35, 712,605.80 and 286,942.70 is: 395,973.00
Step by Step Solution
- Step 1: Write the proportion equation
516,391.35 : 712,605.80 = 286,942.70 : x - Step 2: Convert to fraction form
516,391.35/712,605.80 = 286,942.70/x - Step 3: Cross multiply
516,391.35x = 712,605.80 × 286,942.70 - Step 4: Simplify right side
516,391.35x = 204,477,034,786.53 - Step 5: Solve for x
x = 204,477,034,786.53/516,391.35 - Step 6: Final answer
x = 395,973.00
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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.