Finding the Fourth Proportional to 3,977,688.70, 5,966,533.05 and 1,318,296.70
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Solution
The fourth proportional to 3,977,688.70, 5,966,533.05 and 1,318,296.70 is: 1,977,445.05
Step by Step Solution
- Step 1: Write the proportion equation
3,977,688.70 : 5,966,533.05 = 1,318,296.70 : x - Step 2: Convert to fraction form
3,977,688.70/5,966,533.05 = 1,318,296.70/x - Step 3: Cross multiply
3,977,688.70x = 5,966,533.05 × 1,318,296.70 - Step 4: Simplify right side
3,977,688.70x = 7,865,660,830,255.94 - Step 5: Solve for x
x = 7,865,660,830,255.94/3,977,688.70 - Step 6: Final answer
x = 1,977,445.05
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Double scale
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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.