Finding the Fourth Proportional to 2,153,776.60, 2,972,205.21 and 1,186,906.60
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Solution
The fourth proportional to 2,153,776.60, 2,972,205.21 and 1,186,906.60 is: 1,637,927.53
Step by Step Solution
- Step 1: Write the proportion equation
2,153,776.60 : 2,972,205.21 = 1,186,906.60 : x - Step 2: Convert to fraction form
2,153,776.60/2,972,205.21 = 1,186,906.60/x - Step 3: Cross multiply
2,153,776.60x = 2,972,205.21 × 1,186,906.60 - Step 4: Simplify right side
2,153,776.60x = 3,527,729,980,303.39 - Step 5: Solve for x
x = 3,527,729,980,303.39/2,153,776.60 - Step 6: Final answer
x = 1,637,927.53
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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.