Finding the Fourth Proportional to 717,419.12, 1,075,390.56 and 318,247.88
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Solution
The fourth proportional to 717,419.12, 1,075,390.56 and 318,247.88 is: 477,044.39
Step by Step Solution
- Step 1: Write the proportion equation
717,419.12 : 1,075,390.56 = 318,247.88 : x - Step 2: Convert to fraction form
717,419.12/1,075,390.56 = 318,247.88/x - Step 3: Cross multiply
717,419.12x = 1,075,390.56 × 318,247.88 - Step 4: Simplify right side
717,419.12x = 342,240,760,515.06 - Step 5: Solve for x
x = 342,240,760,515.06/717,419.12 - Step 6: Final answer
x = 477,044.39
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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.