Finding the Fourth Proportional to 2,129,235.21, 3,194,356.23 and 689,916.24
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Solution
The fourth proportional to 2,129,235.21, 3,194,356.23 and 689,916.24 is: 1,035,037.48
Step by Step Solution
- Step 1: Write the proportion equation
2,129,235.21 : 3,194,356.23 = 689,916.24 : x - Step 2: Convert to fraction form
2,129,235.21/3,194,356.23 = 689,916.24/x - Step 3: Cross multiply
2,129,235.21x = 3,194,356.23 × 689,916.24 - Step 4: Simplify right side
2,129,235.21x = 2,203,838,239,422.18 - Step 5: Solve for x
x = 2,203,838,239,422.18/2,129,235.21 - Step 6: Final answer
x = 1,035,037.48
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.