Finding the Fourth Proportional to 2,130,249.12, 2,939,763.80 and 1,212,433.26
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Solution
The fourth proportional to 2,130,249.12, 2,939,763.80 and 1,212,433.26 is: 1,673,169.29
Step by Step Solution
- Step 1: Write the proportion equation
2,130,249.12 : 2,939,763.80 = 1,212,433.26 : x - Step 2: Convert to fraction form
2,130,249.12/2,939,763.80 = 1,212,433.26/x - Step 3: Cross multiply
2,130,249.12x = 2,939,763.80 × 1,212,433.26 - Step 4: Simplify right side
2,130,249.12x = 3,564,267,407,663.99 - Step 5: Solve for x
x = 3,564,267,407,663.99/2,130,249.12 - Step 6: Final answer
x = 1,673,169.29
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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.