Finding the Fourth Proportional to 5,378,416.80, 7,422,216.64 and 2,931,028.56
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Solution
The fourth proportional to 5,378,416.80, 7,422,216.64 and 2,931,028.56 is: 4,044,820.21
Step by Step Solution
- Step 1: Write the proportion equation
5,378,416.80 : 7,422,216.64 = 2,931,028.56 : x - Step 2: Convert to fraction form
5,378,416.80/7,422,216.64 = 2,931,028.56/x - Step 3: Cross multiply
5,378,416.80x = 7,422,216.64 × 2,931,028.56 - Step 4: Simplify right side
5,378,416.80x = 21,754,728,950,347.24 - Step 5: Solve for x
x = 21,754,728,950,347.24/5,378,416.80 - Step 6: Final answer
x = 4,044,820.21
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1.5x scale
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.