Finding the Fourth Proportional to 665,526.36, 918,589.56 and 379,215.12
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Solution
The fourth proportional to 665,526.36, 918,589.56 and 379,215.12 is: 523,409.85
Step by Step Solution
- Step 1: Write the proportion equation
665,526.36 : 918,589.56 = 379,215.12 : x - Step 2: Convert to fraction form
665,526.36/918,589.56 = 379,215.12/x - Step 3: Cross multiply
665,526.36x = 918,589.56 × 379,215.12 - Step 4: Simplify right side
665,526.36x = 348,343,050,226.15 - Step 5: Solve for x
x = 348,343,050,226.15/665,526.36 - Step 6: Final answer
x = 523,409.85
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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.