Finding the Fourth Proportional to 478,419.80, 717,629.70 and 346,543.70
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Solution
The fourth proportional to 478,419.80, 717,629.70 and 346,543.70 is: 519,815.55
Step by Step Solution
- Step 1: Write the proportion equation
478,419.80 : 717,629.70 = 346,543.70 : x - Step 2: Convert to fraction form
478,419.80/717,629.70 = 346,543.70/x - Step 3: Cross multiply
478,419.80x = 717,629.70 × 346,543.70 - Step 4: Simplify right side
478,419.80x = 248,690,051,467.89 - Step 5: Solve for x
x = 248,690,051,467.89/478,419.80 - Step 6: Final answer
x = 519,815.55
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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.