Finding the Fourth Proportional to 2,163,867.81, 2,985,877.31 and 1,246,395.39
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Solution
The fourth proportional to 2,163,867.81, 2,985,877.31 and 1,246,395.39 is: 1,719,875.72
Step by Step Solution
- Step 1: Write the proportion equation
2,163,867.81 : 2,985,877.31 = 1,246,395.39 : x - Step 2: Convert to fraction form
2,163,867.81/2,985,877.31 = 1,246,395.39/x - Step 3: Cross multiply
2,163,867.81x = 2,985,877.31 × 1,246,395.39 - Step 4: Simplify right side
2,163,867.81x = 3,721,583,708,057.62 - Step 5: Solve for x
x = 3,721,583,708,057.62/2,163,867.81 - Step 6: Final answer
x = 1,719,875.72
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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.