Finding the Fourth Proportional to 487,491.60, 672,733.68 and 272,629.20
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Solution
The fourth proportional to 487,491.60, 672,733.68 and 272,629.20 is: 376,225.65
Step by Step Solution
- Step 1: Write the proportion equation
487,491.60 : 672,733.68 = 272,629.20 : x - Step 2: Convert to fraction form
487,491.60/672,733.68 = 272,629.20/x - Step 3: Cross multiply
487,491.60x = 672,733.68 × 272,629.20 - Step 4: Simplify right side
487,491.60x = 183,406,844,991.46 - Step 5: Solve for x
x = 183,406,844,991.46/487,491.60 - Step 6: Final answer
x = 376,225.65
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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.