Finding the Fourth Proportional to 819,128.33, 1,130,402.33 and 456,575.18
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Solution
The fourth proportional to 819,128.33, 1,130,402.33 and 456,575.18 is: 630,076.66
Step by Step Solution
- Step 1: Write the proportion equation
819,128.33 : 1,130,402.33 = 456,575.18 : x - Step 2: Convert to fraction form
819,128.33/1,130,402.33 = 456,575.18/x - Step 3: Cross multiply
819,128.33x = 1,130,402.33 × 456,575.18 - Step 4: Simplify right side
819,128.33x = 516,113,642,781.60 - Step 5: Solve for x
x = 516,113,642,781.60/819,128.33 - Step 6: Final answer
x = 630,076.66
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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.