Finding the Fourth Proportional to 612,083.40, 918,125.10 and 257,497.80
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Solution
The fourth proportional to 612,083.40, 918,125.10 and 257,497.80 is: 386,246.70
Step by Step Solution
- Step 1: Write the proportion equation
612,083.40 : 918,125.10 = 257,497.80 : x - Step 2: Convert to fraction form
612,083.40/918,125.10 = 257,497.80/x - Step 3: Cross multiply
612,083.40x = 918,125.10 × 257,497.80 - Step 4: Simplify right side
612,083.40x = 236,415,193,374.78 - Step 5: Solve for x
x = 236,415,193,374.78/612,083.40 - Step 6: Final answer
x = 386,246.70
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Similar ratio
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.