Finding the Fourth Proportional to 620,221.21, 855,878.74 and 362,112.46
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Solution
The fourth proportional to 620,221.21, 855,878.74 and 362,112.46 is: 499,699.71
Step by Step Solution
- Step 1: Write the proportion equation
620,221.21 : 855,878.74 = 362,112.46 : x - Step 2: Convert to fraction form
620,221.21/855,878.74 = 362,112.46/x - Step 3: Cross multiply
620,221.21x = 855,878.74 × 362,112.46 - Step 4: Simplify right side
620,221.21x = 309,924,354,995.01 - Step 5: Solve for x
x = 309,924,354,995.01/620,221.21 - Step 6: Final answer
x = 499,699.71
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.