Finding the Fourth Proportional to 660,187.38, 910,918.44 and 388,155.99
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Solution
The fourth proportional to 660,187.38, 910,918.44 and 388,155.99 is: 535,572.87
Step by Step Solution
- Step 1: Write the proportion equation
660,187.38 : 910,918.44 = 388,155.99 : x - Step 2: Convert to fraction form
660,187.38/910,918.44 = 388,155.99/x - Step 3: Cross multiply
660,187.38x = 910,918.44 × 388,155.99 - Step 4: Simplify right side
660,187.38x = 353,578,448,887.46 - Step 5: Solve for x
x = 353,578,448,887.46/660,187.38 - Step 6: Final answer
x = 535,572.87
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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.