Finding the Fourth Proportional to 921,437.86, 1,272,232.62 and 646,380.49
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Solution
The fourth proportional to 921,437.86, 1,272,232.62 and 646,380.49 is: 892,459.90
Step by Step Solution
- Step 1: Write the proportion equation
921,437.86 : 1,272,232.62 = 646,380.49 : x - Step 2: Convert to fraction form
921,437.86/1,272,232.62 = 646,380.49/x - Step 3: Cross multiply
921,437.86x = 1,272,232.62 × 646,380.49 - Step 4: Simplify right side
921,437.86x = 822,346,334,716.52 - Step 5: Solve for x
x = 822,346,334,716.52/921,437.86 - Step 6: Final answer
x = 892,459.90
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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.