Finding the Fourth Proportional to 2,688,427.40, 4,037,306.70 and 1,428,715.40
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Solution
The fourth proportional to 2,688,427.40, 4,037,306.70 and 1,428,715.40 is: 2,145,552.55
Step by Step Solution
- Step 1: Write the proportion equation
2,688,427.40 : 4,037,306.70 = 1,428,715.40 : x - Step 2: Convert to fraction form
2,688,427.40/4,037,306.70 = 1,428,715.40/x - Step 3: Cross multiply
2,688,427.40x = 4,037,306.70 × 1,428,715.40 - Step 4: Simplify right side
2,688,427.40x = 5,768,162,256,813.18 - Step 5: Solve for x
x = 5,768,162,256,813.18/2,688,427.40 - Step 6: Final answer
x = 2,145,552.55
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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.