Finding the Fourth Proportional to 691,593.19, 954,427.76 and 389,787.19
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Solution
The fourth proportional to 691,593.19, 954,427.76 and 389,787.19 is: 537,922.76
Step by Step Solution
- Step 1: Write the proportion equation
691,593.19 : 954,427.76 = 389,787.19 : x - Step 2: Convert to fraction form
691,593.19/954,427.76 = 389,787.19/x - Step 3: Cross multiply
691,593.19x = 954,427.76 × 389,787.19 - Step 4: Simplify right side
691,593.19x = 372,023,714,628.39 - Step 5: Solve for x
x = 372,023,714,628.39/691,593.19 - Step 6: Final answer
x = 537,922.76
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1.5x scale
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.