Finding the Fourth Proportional to 678,490.13, 1,018,201.76 and 235,258.13
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Solution
The fourth proportional to 678,490.13, 1,018,201.76 and 235,258.13 is: 353,048.96
Step by Step Solution
- Step 1: Write the proportion equation
678,490.13 : 1,018,201.76 = 235,258.13 : x - Step 2: Convert to fraction form
678,490.13/1,018,201.76 = 235,258.13/x - Step 3: Cross multiply
678,490.13x = 1,018,201.76 × 235,258.13 - Step 4: Simplify right side
678,490.13x = 239,540,235,753.01 - Step 5: Solve for x
x = 239,540,235,753.01/678,490.13 - Step 6: Final answer
x = 353,048.96
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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.