Finding the Fourth Proportional to 636,691.28, 878,615.62 and 350,211.34
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Solution
The fourth proportional to 636,691.28, 878,615.62 and 350,211.34 is: 483,281.56
Step by Step Solution
- Step 1: Write the proportion equation
636,691.28 : 878,615.62 = 350,211.34 : x - Step 2: Convert to fraction form
636,691.28/878,615.62 = 350,211.34/x - Step 3: Cross multiply
636,691.28x = 878,615.62 × 350,211.34 - Step 4: Simplify right side
636,691.28x = 307,701,153,625.13 - Step 5: Solve for x
x = 307,701,153,625.13/636,691.28 - Step 6: Final answer
x = 483,281.56
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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.