Finding the Fourth Proportional to 678,680.70, 1,018,146.12 and 223,297.53
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Solution
The fourth proportional to 678,680.70, 1,018,146.12 and 223,297.53 is: 334,987.45
Step by Step Solution
- Step 1: Write the proportion equation
678,680.70 : 1,018,146.12 = 223,297.53 : x - Step 2: Convert to fraction form
678,680.70/1,018,146.12 = 223,297.53/x - Step 3: Cross multiply
678,680.70x = 1,018,146.12 × 223,297.53 - Step 4: Simplify right side
678,680.70x = 227,349,513,775.08 - Step 5: Solve for x
x = 227,349,513,775.08/678,680.70 - Step 6: Final answer
x = 334,987.45
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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.