Finding the Fourth Proportional to 1,121,578.96, 1,547,777.48 and 719,170
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Solution
The fourth proportional to 1,121,578.96, 1,547,777.48 and 719,170 is: 992,453.65
Step by Step Solution
- Step 1: Write the proportion equation
1,121,578.96 : 1,547,777.48 = 719,170 : x - Step 2: Convert to fraction form
1,121,578.96/1,547,777.48 = 719,170/x - Step 3: Cross multiply
1,121,578.96x = 1,547,777.48 × 719,170 - Step 4: Simplify right side
1,121,578.96x = 1,113,115,130,291.60 - Step 5: Solve for x
x = 1,113,115,130,291.60/1,121,578.96 - Step 6: Final answer
x = 992,453.65
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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.