Finding the Fourth Proportional to 556,538.94, 767,442.87 and 330,140.70
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Solution
The fourth proportional to 556,538.94, 767,442.87 and 330,140.70 is: 455,249.59
Step by Step Solution
- Step 1: Write the proportion equation
556,538.94 : 767,442.87 = 330,140.70 : x - Step 2: Convert to fraction form
556,538.94/767,442.87 = 330,140.70/x - Step 3: Cross multiply
556,538.94x = 767,442.87 × 330,140.70 - Step 4: Simplify right side
556,538.94x = 253,364,126,311.81 - Step 5: Solve for x
x = 253,364,126,311.81/556,538.94 - Step 6: Final answer
x = 455,249.59
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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.