Finding the Fourth Proportional to 687,444.19, 948,672.99 and 385,638.19
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Solution
The fourth proportional to 687,444.19, 948,672.99 and 385,638.19 is: 532,180.71
Step by Step Solution
- Step 1: Write the proportion equation
687,444.19 : 948,672.99 = 385,638.19 : x - Step 2: Convert to fraction form
687,444.19/948,672.99 = 385,638.19/x - Step 3: Cross multiply
687,444.19x = 948,672.99 × 385,638.19 - Step 4: Simplify right side
687,444.19x = 365,844,532,393.81 - Step 5: Solve for x
x = 365,844,532,393.81/687,444.19 - Step 6: Final answer
x = 532,180.71
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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.