Finding the Fourth Proportional to 556,813.44, 767,821.68 and 330,415.20
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Solution
The fourth proportional to 556,813.44, 767,821.68 and 330,415.20 is: 455,628.29
Step by Step Solution
- Step 1: Write the proportion equation
556,813.44 : 767,821.68 = 330,415.20 : x - Step 2: Convert to fraction form
556,813.44/767,821.68 = 330,415.20/x - Step 3: Cross multiply
556,813.44x = 767,821.68 × 330,415.20 - Step 4: Simplify right side
556,813.44x = 253,699,953,961.54 - Step 5: Solve for x
x = 253,699,953,961.54/556,813.44 - Step 6: Final answer
x = 455,628.29
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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.