Finding the Fourth Proportional to 5,378,588.16, 7,422,452.80 and 2,931,199.76
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Solution
The fourth proportional to 5,378,588.16, 7,422,452.80 and 2,931,199.76 is: 4,045,056.29
Step by Step Solution
- Step 1: Write the proportion equation
5,378,588.16 : 7,422,452.80 = 2,931,199.76 : x - Step 2: Convert to fraction form
5,378,588.16/7,422,452.80 = 2,931,199.76/x - Step 3: Cross multiply
5,378,588.16x = 7,422,452.80 × 2,931,199.76 - Step 4: Simplify right side
5,378,588.16x = 21,756,691,865,971.32 - Step 5: Solve for x
x = 21,756,691,865,971.32/5,378,588.16 - Step 6: Final answer
x = 4,045,056.29
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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.