Finding the Fourth Proportional to 440,377.60, 606,339.84 and 388,641.28
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Solution
The fourth proportional to 440,377.60, 606,339.84 and 388,641.28 is: 535,105.99
Step by Step Solution
- Step 1: Write the proportion equation
440,377.60 : 606,339.84 = 388,641.28 : x - Step 2: Convert to fraction form
440,377.60/606,339.84 = 388,641.28/x - Step 3: Cross multiply
440,377.60x = 606,339.84 × 388,641.28 - Step 4: Simplify right side
440,377.60x = 235,648,691,532.60 - Step 5: Solve for x
x = 235,648,691,532.60/440,377.60 - Step 6: Final answer
x = 535,105.99
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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.