Finding the Fourth Proportional to 11,078,772.80, 15,291,257.36 and 6,496,570.40
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Solution
The fourth proportional to 11,078,772.80, 15,291,257.36 and 6,496,570.40 is: 8,966,762.99
Step by Step Solution
- Step 1: Write the proportion equation
11,078,772.80 : 15,291,257.36 = 6,496,570.40 : x - Step 2: Convert to fraction form
11,078,772.80/15,291,257.36 = 6,496,570.40/x - Step 3: Cross multiply
11,078,772.80x = 15,291,257.36 × 6,496,570.40 - Step 4: Simplify right side
11,078,772.80x = 99,340,729,943,758.14 - Step 5: Solve for x
x = 99,340,729,943,758.14/11,078,772.80 - Step 6: Final answer
x = 8,966,762.99
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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.