Finding the Fourth Proportional to 678,869.17, 1,018,303.74 and 173,431.26
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Solution
The fourth proportional to 678,869.17, 1,018,303.74 and 173,431.26 is: 260,146.89
Step by Step Solution
- Step 1: Write the proportion equation
678,869.17 : 1,018,303.74 = 173,431.26 : x - Step 2: Convert to fraction form
678,869.17/1,018,303.74 = 173,431.26/x - Step 3: Cross multiply
678,869.17x = 1,018,303.74 × 173,431.26 - Step 4: Simplify right side
678,869.17x = 176,605,700,690.91 - Step 5: Solve for x
x = 176,605,700,690.91/678,869.17 - Step 6: Final answer
x = 260,146.89
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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.