Finding the Fourth Proportional to 1,212,631.55, 1,673,143.82 and 689,301.08
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Solution
The fourth proportional to 1,212,631.55, 1,673,143.82 and 689,301.08 is: 951,071.95
Step by Step Solution
- Step 1: Write the proportion equation
1,212,631.55 : 1,673,143.82 = 689,301.08 : x - Step 2: Convert to fraction form
1,212,631.55/1,673,143.82 = 689,301.08/x - Step 3: Cross multiply
1,212,631.55x = 1,673,143.82 × 689,301.08 - Step 4: Simplify right side
1,212,631.55x = 1,153,299,848,027.44 - Step 5: Solve for x
x = 1,153,299,848,027.44/1,212,631.55 - Step 6: Final answer
x = 951,071.95
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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.