Finding the Fourth Proportional to 512,938.60, 770,720.10 and 455,201.80
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Solution
The fourth proportional to 512,938.60, 770,720.10 and 455,201.80 is: 683,967.20
Step by Step Solution
- Step 1: Write the proportion equation
512,938.60 : 770,720.10 = 455,201.80 : x - Step 2: Convert to fraction form
512,938.60/770,720.10 = 455,201.80/x - Step 3: Cross multiply
512,938.60x = 770,720.10 × 455,201.80 - Step 4: Simplify right side
512,938.60x = 350,833,176,816.18 - Step 5: Solve for x
x = 350,833,176,816.18/512,938.60 - Step 6: Final answer
x = 683,967.20
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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.