Finding the Fourth Proportional to 516,357.09, 712,571.09 and 286,913.48
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Solution
The fourth proportional to 516,357.09, 712,571.09 and 286,913.48 is: 395,939.65
Step by Step Solution
- Step 1: Write the proportion equation
516,357.09 : 712,571.09 = 286,913.48 : x - Step 2: Convert to fraction form
516,357.09/712,571.09 = 286,913.48/x - Step 3: Cross multiply
516,357.09x = 712,571.09 × 286,913.48 - Step 4: Simplify right side
516,357.09x = 204,446,246,181.87 - Step 5: Solve for x
x = 204,446,246,181.87/516,357.09 - Step 6: Final answer
x = 395,939.65
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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.