Finding the Fourth Proportional to 853,961.60, 1,178,424.62 and 471,978.56
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Solution
The fourth proportional to 853,961.60, 1,178,424.62 and 471,978.56 is: 651,306.99
Step by Step Solution
- Step 1: Write the proportion equation
853,961.60 : 1,178,424.62 = 471,978.56 : x - Step 2: Convert to fraction form
853,961.60/1,178,424.62 = 471,978.56/x - Step 3: Cross multiply
853,961.60x = 1,178,424.62 × 471,978.56 - Step 4: Simplify right side
853,961.60x = 556,191,155,216.15 - Step 5: Solve for x
x = 556,191,155,216.15/853,961.60 - Step 6: Final answer
x = 651,306.99
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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.