Finding the Fourth Proportional to 3,940,909.53, 5,438,455.20 and 2,130,073.53
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Solution
The fourth proportional to 3,940,909.53, 5,438,455.20 and 2,130,073.53 is: 2,939,501.50
Step by Step Solution
- Step 1: Write the proportion equation
3,940,909.53 : 5,438,455.20 = 2,130,073.53 : x - Step 2: Convert to fraction form
3,940,909.53/5,438,455.20 = 2,130,073.53/x - Step 3: Cross multiply
3,940,909.53x = 5,438,455.20 × 2,130,073.53 - Step 4: Simplify right side
3,940,909.53x = 11,584,309,465,610.86 - Step 5: Solve for x
x = 11,584,309,465,610.86/3,940,909.53 - Step 6: Final answer
x = 2,939,501.50
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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.