Finding the Fourth Proportional to 578,239.11, 866,859.84 and 278,307.09
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Solution
The fourth proportional to 578,239.11, 866,859.84 and 278,307.09 is: 417,220.55
Step by Step Solution
- Step 1: Write the proportion equation
578,239.11 : 866,859.84 = 278,307.09 : x - Step 2: Convert to fraction form
578,239.11/866,859.84 = 278,307.09/x - Step 3: Cross multiply
578,239.11x = 866,859.84 × 278,307.09 - Step 4: Simplify right side
578,239.11x = 241,253,239,508.27 - Step 5: Solve for x
x = 241,253,239,508.27/578,239.11 - Step 6: Final answer
x = 417,220.55
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.