Finding the Fourth Proportional to 725,146.09, 1,085,389.98 and 387,342.07
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Solution
The fourth proportional to 725,146.09, 1,085,389.98 and 387,342.07 is: 579,768.97
Step by Step Solution
- Step 1: Write the proportion equation
725,146.09 : 1,085,389.98 = 387,342.07 : x - Step 2: Convert to fraction form
725,146.09/1,085,389.98 = 387,342.07/x - Step 3: Cross multiply
725,146.09x = 1,085,389.98 × 387,342.07 - Step 4: Simplify right side
725,146.09x = 420,417,201,610.46 - Step 5: Solve for x
x = 420,417,201,610.46/725,146.09 - Step 6: Final answer
x = 579,768.97
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.