Finding the Fourth Proportional to 731,215.80, 1,096,987.68 and 257,905.08
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Solution
The fourth proportional to 731,215.80, 1,096,987.68 and 257,905.08 is: 386,915.46
Step by Step Solution
- Step 1: Write the proportion equation
731,215.80 : 1,096,987.68 = 257,905.08 : x - Step 2: Convert to fraction form
731,215.80/1,096,987.68 = 257,905.08/x - Step 3: Cross multiply
731,215.80x = 1,096,987.68 × 257,905.08 - Step 4: Simplify right side
731,215.80x = 282,918,695,369.41 - Step 5: Solve for x
x = 282,918,695,369.41/731,215.80 - Step 6: Final answer
x = 386,915.46
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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.