Finding the Fourth Proportional to 1,971,646.37, 2,720,851.13 and 1,112,486.21
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Solution
The fourth proportional to 1,971,646.37, 2,720,851.13 and 1,112,486.21 is: 1,535,219.19
Step by Step Solution
- Step 1: Write the proportion equation
1,971,646.37 : 2,720,851.13 = 1,112,486.21 : x - Step 2: Convert to fraction form
1,971,646.37/2,720,851.13 = 1,112,486.21/x - Step 3: Cross multiply
1,971,646.37x = 2,720,851.13 × 1,112,486.21 - Step 4: Simplify right side
1,971,646.37x = 3,026,909,342,421.23 - Step 5: Solve for x
x = 3,026,909,342,421.23/1,971,646.37 - Step 6: Final answer
x = 1,535,219.19
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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.