Finding the Fourth Proportional to 689,884.80, 952,039.68 and 388,078.80
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Solution
The fourth proportional to 689,884.80, 952,039.68 and 388,078.80 is: 535,547.99
Step by Step Solution
- Step 1: Write the proportion equation
689,884.80 : 952,039.68 = 388,078.80 : x - Step 2: Convert to fraction form
689,884.80/952,039.68 = 388,078.80/x - Step 3: Cross multiply
689,884.80x = 952,039.68 × 388,078.80 - Step 4: Simplify right side
689,884.80x = 369,466,416,566.78 - Step 5: Solve for x
x = 369,466,416,566.78/689,884.80 - Step 6: Final answer
x = 535,547.99
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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.