Finding the Fourth Proportional to 709,761.40, 979,485.56 and 387,485.08
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Solution
The fourth proportional to 709,761.40, 979,485.56 and 387,485.08 is: 534,737.50
Step by Step Solution
- Step 1: Write the proportion equation
709,761.40 : 979,485.56 = 387,485.08 : x - Step 2: Convert to fraction form
709,761.40/979,485.56 = 387,485.08/x - Step 3: Cross multiply
709,761.40x = 979,485.56 × 387,485.08 - Step 4: Simplify right side
709,761.40x = 379,536,038,638.02 - Step 5: Solve for x
x = 379,536,038,638.02/709,761.40 - Step 6: Final answer
x = 534,737.50
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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.