Finding the Fourth Proportional to 5,125,421.70, 7,688,132.55 and 3,240,519.30
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Solution
The fourth proportional to 5,125,421.70, 7,688,132.55 and 3,240,519.30 is: 4,860,778.95
Step by Step Solution
- Step 1: Write the proportion equation
5,125,421.70 : 7,688,132.55 = 3,240,519.30 : x - Step 2: Convert to fraction form
5,125,421.70/7,688,132.55 = 3,240,519.30/x - Step 3: Cross multiply
5,125,421.70x = 7,688,132.55 × 3,240,519.30 - Step 4: Simplify right side
5,125,421.70x = 24,913,541,909,233.21 - Step 5: Solve for x
x = 24,913,541,909,233.21/5,125,421.70 - Step 6: Final answer
x = 4,860,778.95
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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.