Finding the Fourth Proportional to 918,915.21, 1,267,917.17 and 536,868.18
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Solution
The fourth proportional to 918,915.21, 1,267,917.17 and 536,868.18 is: 740,769.52
Step by Step Solution
- Step 1: Write the proportion equation
918,915.21 : 1,267,917.17 = 536,868.18 : x - Step 2: Convert to fraction form
918,915.21/1,267,917.17 = 536,868.18/x - Step 3: Cross multiply
918,915.21x = 1,267,917.17 × 536,868.18 - Step 4: Simplify right side
918,915.21x = 680,704,380,764.31 - Step 5: Solve for x
x = 680,704,380,764.31/918,915.21 - Step 6: Final answer
x = 740,769.52
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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.