Finding the Fourth Proportional to 2,130,430.76, 2,939,989.75 and 1,163,561.09
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Solution
The fourth proportional to 2,130,430.76, 2,939,989.75 and 1,163,561.09 is: 1,605,711.74
Step by Step Solution
- Step 1: Write the proportion equation
2,130,430.76 : 2,939,989.75 = 1,163,561.09 : x - Step 2: Convert to fraction form
2,130,430.76/2,939,989.75 = 1,163,561.09/x - Step 3: Cross multiply
2,130,430.76x = 2,939,989.75 × 1,163,561.09 - Step 4: Simplify right side
2,130,430.76x = 3,420,857,678,098.83 - Step 5: Solve for x
x = 3,420,857,678,098.83/2,130,430.76 - Step 6: Final answer
x = 1,605,711.74
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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.