Finding the Fourth Proportional to 620,225.87, 855,991.08 and 378,457.28
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Solution
The fourth proportional to 620,225.87, 855,991.08 and 378,457.28 is: 522,319.48
Step by Step Solution
- Step 1: Write the proportion equation
620,225.87 : 855,991.08 = 378,457.28 : x - Step 2: Convert to fraction form
620,225.87/855,991.08 = 378,457.28/x - Step 3: Cross multiply
620,225.87x = 855,991.08 × 378,457.28 - Step 4: Simplify right side
620,225.87x = 323,956,055,841.06 - Step 5: Solve for x
x = 323,956,055,841.06/620,225.87 - Step 6: Final answer
x = 522,319.48
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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.