Finding the Fourth Proportional to 678,493.13, 1,018,206.26 and 235,261.13
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Solution
The fourth proportional to 678,493.13, 1,018,206.26 and 235,261.13 is: 353,053.47
Step by Step Solution
- Step 1: Write the proportion equation
678,493.13 : 1,018,206.26 = 235,261.13 : x - Step 2: Convert to fraction form
678,493.13/1,018,206.26 = 235,261.13/x - Step 3: Cross multiply
678,493.13x = 1,018,206.26 × 235,261.13 - Step 4: Simplify right side
678,493.13x = 239,544,355,300.67 - Step 5: Solve for x
x = 239,544,355,300.67/678,493.13 - Step 6: Final answer
x = 353,053.47
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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.