Finding the Fourth Proportional to 2,166,173.21, 2,989,633.86 and 1,248,223.70
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Solution
The fourth proportional to 2,166,173.21, 2,989,633.86 and 1,248,223.70 is: 1,722,730.12
Step by Step Solution
- Step 1: Write the proportion equation
2,166,173.21 : 2,989,633.86 = 1,248,223.70 : x - Step 2: Convert to fraction form
2,166,173.21/2,989,633.86 = 1,248,223.70/x - Step 3: Cross multiply
2,166,173.21x = 2,989,633.86 × 1,248,223.70 - Step 4: Simplify right side
2,166,173.21x = 3,731,731,823,426.31 - Step 5: Solve for x
x = 3,731,731,823,426.31/2,166,173.21 - Step 6: Final answer
x = 1,722,730.12
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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.