Finding the Fourth Proportional to 493,145.70, 739,718.55 and 458,153.70
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Solution
The fourth proportional to 493,145.70, 739,718.55 and 458,153.70 is: 687,230.55
Step by Step Solution
- Step 1: Write the proportion equation
493,145.70 : 739,718.55 = 458,153.70 : x - Step 2: Convert to fraction form
493,145.70/739,718.55 = 458,153.70/x - Step 3: Cross multiply
493,145.70x = 739,718.55 × 458,153.70 - Step 4: Simplify right side
493,145.70x = 338,904,790,641.14 - Step 5: Solve for x
x = 338,904,790,641.14/493,145.70 - Step 6: Final answer
x = 687,230.55
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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.