Finding the Fourth Proportional to 1,931,407.44, 2,665,672.12 and 1,115,464.47
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Solution
The fourth proportional to 1,931,407.44, 2,665,672.12 and 1,115,464.47 is: 1,539,531.47
Step by Step Solution
- Step 1: Write the proportion equation
1,931,407.44 : 2,665,672.12 = 1,115,464.47 : x - Step 2: Convert to fraction form
1,931,407.44/2,665,672.12 = 1,115,464.47/x - Step 3: Cross multiply
1,931,407.44x = 2,665,672.12 × 1,115,464.47 - Step 4: Simplify right side
1,931,407.44x = 2,973,462,538,529.58 - Step 5: Solve for x
x = 2,973,462,538,529.58/1,931,407.44 - Step 6: Final answer
x = 1,539,531.47
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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.