Finding the Fourth Proportional to 478,367.70, 717,551.55 and 455,039.70
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Solution
The fourth proportional to 478,367.70, 717,551.55 and 455,039.70 is: 682,559.55
Step by Step Solution
- Step 1: Write the proportion equation
478,367.70 : 717,551.55 = 455,039.70 : x - Step 2: Convert to fraction form
478,367.70/717,551.55 = 455,039.70/x - Step 3: Cross multiply
478,367.70x = 717,551.55 × 455,039.70 - Step 4: Simplify right side
478,367.70x = 326,514,442,046.54 - Step 5: Solve for x
x = 326,514,442,046.54/478,367.70 - Step 6: Final answer
x = 682,559.55
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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.