Finding the Fourth Proportional to 478,847.70, 718,271.55 and 455,519.70
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Solution
The fourth proportional to 478,847.70, 718,271.55 and 455,519.70 is: 683,279.55
Step by Step Solution
- Step 1: Write the proportion equation
478,847.70 : 718,271.55 = 455,519.70 : x - Step 2: Convert to fraction form
478,847.70/718,271.55 = 455,519.70/x - Step 3: Cross multiply
478,847.70x = 718,271.55 × 455,519.70 - Step 4: Simplify right side
478,847.70x = 327,186,840,974.54 - Step 5: Solve for x
x = 327,186,840,974.54/478,847.70 - Step 6: Final answer
x = 683,279.55
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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.