Finding the Fourth Proportional to 680,913.70, 1,021,370.55 and 470,961.70
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Solution
The fourth proportional to 680,913.70, 1,021,370.55 and 470,961.70 is: 706,442.55
Step by Step Solution
- Step 1: Write the proportion equation
680,913.70 : 1,021,370.55 = 470,961.70 : x - Step 2: Convert to fraction form
680,913.70/1,021,370.55 = 470,961.70/x - Step 3: Cross multiply
680,913.70x = 1,021,370.55 × 470,961.70 - Step 4: Simplify right side
680,913.70x = 481,026,410,557.94 - Step 5: Solve for x
x = 481,026,410,557.94/680,913.70 - Step 6: Final answer
x = 706,442.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.