Finding the Fourth Proportional to 2,130,342.28, 2,939,891.13 and 1,212,630.50
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Solution
The fourth proportional to 2,130,342.28, 2,939,891.13 and 1,212,630.50 is: 1,673,440.79
Step by Step Solution
- Step 1: Write the proportion equation
2,130,342.28 : 2,939,891.13 = 1,212,630.50 : x - Step 2: Convert to fraction form
2,130,342.28/2,939,891.13 = 1,212,630.50/x - Step 3: Cross multiply
2,130,342.28x = 2,939,891.13 × 1,212,630.50 - Step 4: Simplify right side
2,130,342.28x = 3,565,001,658,267.19 - Step 5: Solve for x
x = 3,565,001,658,267.19/2,130,342.28 - Step 6: Final answer
x = 1,673,440.79
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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.