Finding the Fourth Proportional to 678,872.64, 1,018,440.06 and 258,115.80
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Solution
The fourth proportional to 678,872.64, 1,018,440.06 and 258,115.80 is: 387,223.55
Step by Step Solution
- Step 1: Write the proportion equation
678,872.64 : 1,018,440.06 = 258,115.80 : x - Step 2: Convert to fraction form
678,872.64/1,018,440.06 = 258,115.80/x - Step 3: Cross multiply
678,872.64x = 1,018,440.06 × 258,115.80 - Step 4: Simplify right side
678,872.64x = 262,875,470,838.95 - Step 5: Solve for x
x = 262,875,470,838.95/678,872.64 - Step 6: Final answer
x = 387,223.55
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.