Finding the Fourth Proportional to 828,135.66, 1,142,684.73 and 465,509.19
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Solution
The fourth proportional to 828,135.66, 1,142,684.73 and 465,509.19 is: 642,322.59
Step by Step Solution
- Step 1: Write the proportion equation
828,135.66 : 1,142,684.73 = 465,509.19 : x - Step 2: Convert to fraction form
828,135.66/1,142,684.73 = 465,509.19/x - Step 3: Cross multiply
828,135.66x = 1,142,684.73 × 465,509.19 - Step 4: Simplify right side
828,135.66x = 531,930,243,087.67 - Step 5: Solve for x
x = 531,930,243,087.67/828,135.66 - Step 6: Final answer
x = 642,322.59
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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.