Finding the Fourth Proportional to 438,419.10, 657,628.65 and 438,419.10
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Solution
The fourth proportional to 438,419.10, 657,628.65 and 438,419.10 is: 657,628.65
Step by Step Solution
- Step 1: Write the proportion equation
438,419.10 : 657,628.65 = 438,419.10 : x - Step 2: Convert to fraction form
438,419.10/657,628.65 = 438,419.10/x - Step 3: Cross multiply
438,419.10x = 657,628.65 × 438,419.10 - Step 4: Simplify right side
438,419.10x = 288,316,960,867.22 - Step 5: Solve for x
x = 288,316,960,867.22/438,419.10 - Step 6: Final answer
x = 657,628.65
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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.