Finding the Fourth Proportional to 521,657.80, 782,486.70 and 346,553.80
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Solution
The fourth proportional to 521,657.80, 782,486.70 and 346,553.80 is: 519,830.70
Step by Step Solution
- Step 1: Write the proportion equation
521,657.80 : 782,486.70 = 346,553.80 : x - Step 2: Convert to fraction form
521,657.80/782,486.70 = 346,553.80/x - Step 3: Cross multiply
521,657.80x = 782,486.70 × 346,553.80 - Step 4: Simplify right side
521,657.80x = 271,173,739,334.46 - Step 5: Solve for x
x = 271,173,739,334.46/521,657.80 - Step 6: Final answer
x = 519,830.70
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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.