Finding the Fourth Proportional to 825,772.49, 1,139,563.69 and 458,305.09
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Solution
The fourth proportional to 825,772.49, 1,139,563.69 and 458,305.09 is: 632,459.72
Step by Step Solution
- Step 1: Write the proportion equation
825,772.49 : 1,139,563.69 = 458,305.09 : x - Step 2: Convert to fraction form
825,772.49/1,139,563.69 = 458,305.09/x - Step 3: Cross multiply
825,772.49x = 1,139,563.69 × 458,305.09 - Step 4: Simplify right side
825,772.49x = 522,267,835,511.51 - Step 5: Solve for x
x = 522,267,835,511.51/825,772.49 - Step 6: Final answer
x = 632,459.72
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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.