Finding the Fourth Proportional to 2,153,349.09, 2,970,688.07 and 1,281,694.99
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Solution
The fourth proportional to 2,153,349.09, 2,970,688.07 and 1,281,694.99 is: 1,768,183.35
Step by Step Solution
- Step 1: Write the proportion equation
2,153,349.09 : 2,970,688.07 = 1,281,694.99 : x - Step 2: Convert to fraction form
2,153,349.09/2,970,688.07 = 1,281,694.99/x - Step 3: Cross multiply
2,153,349.09x = 2,970,688.07 × 1,281,694.99 - Step 4: Simplify right side
2,153,349.09x = 3,807,516,016,171.77 - Step 5: Solve for x
x = 3,807,516,016,171.77/2,153,349.09 - Step 6: Final answer
x = 1,768,183.35
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1.5x scale
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.