Finding the Fourth Proportional to 689,406.99, 1,035,079.29 and 352,689.18
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Solution
The fourth proportional to 689,406.99, 1,035,079.29 and 352,689.18 is: 529,529.39
Step by Step Solution
- Step 1: Write the proportion equation
689,406.99 : 1,035,079.29 = 352,689.18 : x - Step 2: Convert to fraction form
689,406.99/1,035,079.29 = 352,689.18/x - Step 3: Cross multiply
689,406.99x = 1,035,079.29 × 352,689.18 - Step 4: Simplify right side
689,406.99x = 365,061,266,025.08 - Step 5: Solve for x
x = 365,061,266,025.08/689,406.99 - Step 6: Final answer
x = 529,529.39
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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.