Finding the Fourth Proportional to 678,678.21, 1,017,849.11 and 229,389.10
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Solution
The fourth proportional to 678,678.21, 1,017,849.11 and 229,389.10 is: 344,026.79
Step by Step Solution
- Step 1: Write the proportion equation
678,678.21 : 1,017,849.11 = 229,389.10 : x - Step 2: Convert to fraction form
678,678.21/1,017,849.11 = 229,389.10/x - Step 3: Cross multiply
678,678.21x = 1,017,849.11 × 229,389.10 - Step 4: Simplify right side
678,678.21x = 233,483,487,587.13 - Step 5: Solve for x
x = 233,483,487,587.13/678,678.21 - Step 6: Final answer
x = 344,026.79
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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.