Finding the Fourth Proportional to 872,402.12, 1,203,919.98 and 490,425.56
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Solution
The fourth proportional to 872,402.12, 1,203,919.98 and 490,425.56 is: 676,790.11
Step by Step Solution
- Step 1: Write the proportion equation
872,402.12 : 1,203,919.98 = 490,425.56 : x - Step 2: Convert to fraction form
872,402.12/1,203,919.98 = 490,425.56/x - Step 3: Cross multiply
872,402.12x = 1,203,919.98 × 490,425.56 - Step 4: Simplify right side
872,402.12x = 590,433,130,386.69 - Step 5: Solve for x
x = 590,433,130,386.69/872,402.12 - Step 6: Final answer
x = 676,790.11
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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.