Finding the Fourth Proportional to 438,400.80, 615,160.80 and 438,400.80
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Solution
The fourth proportional to 438,400.80, 615,160.80 and 438,400.80 is: 615,160.80
Step by Step Solution
- Step 1: Write the proportion equation
438,400.80 : 615,160.80 = 438,400.80 : x - Step 2: Convert to fraction form
438,400.80/615,160.80 = 438,400.80/x - Step 3: Cross multiply
438,400.80x = 615,160.80 × 438,400.80 - Step 4: Simplify right side
438,400.80x = 269,686,986,848.64 - Step 5: Solve for x
x = 269,686,986,848.64/438,400.80 - Step 6: Final answer
x = 615,160.80
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.