Finding the Fourth Proportional to 538,387.24, 742,965.06 and 312,053.80
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Solution
The fourth proportional to 538,387.24, 742,965.06 and 312,053.80 is: 430,628.84
Step by Step Solution
- Step 1: Write the proportion equation
538,387.24 : 742,965.06 = 312,053.80 : x - Step 2: Convert to fraction form
538,387.24/742,965.06 = 312,053.80/x - Step 3: Cross multiply
538,387.24x = 742,965.06 × 312,053.80 - Step 4: Simplify right side
538,387.24x = 231,845,070,240.23 - Step 5: Solve for x
x = 231,845,070,240.23/538,387.24 - Step 6: Final answer
x = 430,628.84
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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.