Finding the Fourth Proportional to 819,129.07, 1,130,403.36 and 456,575.91
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Solution
The fourth proportional to 819,129.07, 1,130,403.36 and 456,575.91 is: 630,077.68
Step by Step Solution
- Step 1: Write the proportion equation
819,129.07 : 1,130,403.36 = 456,575.91 : x - Step 2: Convert to fraction form
819,129.07/1,130,403.36 = 456,575.91/x - Step 3: Cross multiply
819,129.07x = 1,130,403.36 × 456,575.91 - Step 4: Simplify right side
819,129.07x = 516,114,945,585.07 - Step 5: Solve for x
x = 516,114,945,585.07/819,129.07 - Step 6: Final answer
x = 630,077.68
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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.