Finding the Fourth Proportional to 872,721.18, 1,204,347.69 and 490,739.76
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Solution
The fourth proportional to 872,721.18, 1,204,347.69 and 490,739.76 is: 677,216.63
Step by Step Solution
- Step 1: Write the proportion equation
872,721.18 : 1,204,347.69 = 490,739.76 : x - Step 2: Convert to fraction form
872,721.18/1,204,347.69 = 490,739.76/x - Step 3: Cross multiply
872,721.18x = 1,204,347.69 × 490,739.76 - Step 4: Simplify right side
872,721.18x = 591,021,296,347.15 - Step 5: Solve for x
x = 591,021,296,347.15/872,721.18 - Step 6: Final answer
x = 677,216.63
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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.