Finding the Fourth Proportional to 679,905.44, 938,287.18 and 373,989.70
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Solution
The fourth proportional to 679,905.44, 938,287.18 and 373,989.70 is: 516,115.51
Step by Step Solution
- Step 1: Write the proportion equation
679,905.44 : 938,287.18 = 373,989.70 : x - Step 2: Convert to fraction form
679,905.44/938,287.18 = 373,989.70/x - Step 3: Cross multiply
679,905.44x = 938,287.18 × 373,989.70 - Step 4: Simplify right side
679,905.44x = 350,909,740,962.05 - Step 5: Solve for x
x = 350,909,740,962.05/679,905.44 - Step 6: Final answer
x = 516,115.51
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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.