Finding the Fourth Proportional to 478,991.70, 718,487.55 and 455,663.70
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Solution
The fourth proportional to 478,991.70, 718,487.55 and 455,663.70 is: 683,495.55
Step by Step Solution
- Step 1: Write the proportion equation
478,991.70 : 718,487.55 = 455,663.70 : x - Step 2: Convert to fraction form
478,991.70/718,487.55 = 455,663.70/x - Step 3: Cross multiply
478,991.70x = 718,487.55 × 455,663.70 - Step 4: Simplify right side
478,991.70x = 327,388,695,436.94 - Step 5: Solve for x
x = 327,388,695,436.94/478,991.70 - Step 6: Final answer
x = 683,495.55
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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.