Finding the Fourth Proportional to 559,403.36, 771,996.48 and 317,679.20
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Solution
The fourth proportional to 559,403.36, 771,996.48 and 317,679.20 is: 438,408.56
Step by Step Solution
- Step 1: Write the proportion equation
559,403.36 : 771,996.48 = 317,679.20 : x - Step 2: Convert to fraction form
559,403.36/771,996.48 = 317,679.20/x - Step 3: Cross multiply
559,403.36x = 771,996.48 × 317,679.20 - Step 4: Simplify right side
559,403.36x = 245,247,224,169.22 - Step 5: Solve for x
x = 245,247,224,169.22/559,403.36 - Step 6: Final answer
x = 438,408.56
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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.