Finding the Fourth Proportional to 528,884.69, 728,952.14 and 381,830.81
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Solution
The fourth proportional to 528,884.69, 728,952.14 and 381,830.81 is: 526,270.45
Step by Step Solution
- Step 1: Write the proportion equation
528,884.69 : 728,952.14 = 381,830.81 : x - Step 2: Convert to fraction form
528,884.69/728,952.14 = 381,830.81/x - Step 3: Cross multiply
528,884.69x = 728,952.14 × 381,830.81 - Step 4: Simplify right side
528,884.69x = 278,336,383,377.25 - Step 5: Solve for x
x = 278,336,383,377.25/528,884.69 - Step 6: Final answer
x = 526,270.45
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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.