Finding the Fourth Proportional to 689,936.55, 952,110.99 and 388,130.55
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Solution
The fourth proportional to 689,936.55, 952,110.99 and 388,130.55 is: 535,619.34
Step by Step Solution
- Step 1: Write the proportion equation
689,936.55 : 952,110.99 = 388,130.55 : x - Step 2: Convert to fraction form
689,936.55/952,110.99 = 388,130.55/x - Step 3: Cross multiply
689,936.55x = 952,110.99 × 388,130.55 - Step 4: Simplify right side
689,936.55x = 369,543,362,209.75 - Step 5: Solve for x
x = 369,543,362,209.75/689,936.55 - Step 6: Final answer
x = 535,619.34
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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.