Finding the Fourth Proportional to 2,628,129.32, 3,939,103.12 and 1,187,130.74
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Solution
The fourth proportional to 2,628,129.32, 3,939,103.12 and 1,187,130.74 is: 1,779,299.96
Step by Step Solution
- Step 1: Write the proportion equation
2,628,129.32 : 3,939,103.12 = 1,187,130.74 : x - Step 2: Convert to fraction form
2,628,129.32/3,939,103.12 = 1,187,130.74/x - Step 3: Cross multiply
2,628,129.32x = 3,939,103.12 × 1,187,130.74 - Step 4: Simplify right side
2,628,129.32x = 4,676,230,401,781.91 - Step 5: Solve for x
x = 4,676,230,401,781.91/2,628,129.32 - Step 6: Final answer
x = 1,779,299.96
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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.