Finding the Fourth Proportional to 657,631.70, 921,617.50 and 657,631.70
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Solution
The fourth proportional to 657,631.70, 921,617.50 and 657,631.70 is: 921,617.50
Step by Step Solution
- Step 1: Write the proportion equation
657,631.70 : 921,617.50 = 657,631.70 : x - Step 2: Convert to fraction form
657,631.70/921,617.50 = 657,631.70/x - Step 3: Cross multiply
657,631.70x = 921,617.50 × 657,631.70 - Step 4: Simplify right side
657,631.70x = 606,084,883,274.75 - Step 5: Solve for x
x = 606,084,883,274.75/657,631.70 - Step 6: Final answer
x = 921,617.50
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.