Finding the Fourth Proportional to 5,321,811.84, 7,341,924.24 and 3,929,709.12
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Solution
The fourth proportional to 5,321,811.84, 7,341,924.24 and 3,929,709.12 is: 5,421,391.72
Step by Step Solution
- Step 1: Write the proportion equation
5,321,811.84 : 7,341,924.24 = 3,929,709.12 : x - Step 2: Convert to fraction form
5,321,811.84/7,341,924.24 = 3,929,709.12/x - Step 3: Cross multiply
5,321,811.84x = 7,341,924.24 × 3,929,709.12 - Step 4: Simplify right side
5,321,811.84x = 28,851,626,644,277.07 - Step 5: Solve for x
x = 28,851,626,644,277.07/5,321,811.84 - Step 6: Final answer
x = 5,421,391.72
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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.