Finding the Fourth Proportional to 1,512,379.90, 2,087,231.35 and 1,129,742.38
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Solution
The fourth proportional to 1,512,379.90, 2,087,231.35 and 1,129,742.38 is: 1,559,154.36
Step by Step Solution
- Step 1: Write the proportion equation
1,512,379.90 : 2,087,231.35 = 1,129,742.38 : x - Step 2: Convert to fraction form
1,512,379.90/2,087,231.35 = 1,129,742.38/x - Step 3: Cross multiply
1,512,379.90x = 2,087,231.35 × 1,129,742.38 - Step 4: Simplify right side
1,512,379.90x = 2,358,033,712,959.61 - Step 5: Solve for x
x = 2,358,033,712,959.61/1,512,379.90 - Step 6: Final answer
x = 1,559,154.36
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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.