Finding the Fourth Proportional to 10,341,818.70, 15,512,728.05 and 5,239,985.10
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Solution
The fourth proportional to 10,341,818.70, 15,512,728.05 and 5,239,985.10 is: 7,859,977.65
Step by Step Solution
- Step 1: Write the proportion equation
10,341,818.70 : 15,512,728.05 = 5,239,985.10 : x - Step 2: Convert to fraction form
10,341,818.70/15,512,728.05 = 5,239,985.10/x - Step 3: Cross multiply
10,341,818.70x = 15,512,728.05 × 5,239,985.10 - Step 4: Simplify right side
10,341,818.70x = 81,286,463,842,352.05 - Step 5: Solve for x
x = 81,286,463,842,352.05/10,341,818.70 - Step 6: Final answer
x = 7,859,977.65
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1.5x scale
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.