Finding the Fourth Proportional to 643,813.80, 965,720.70 and 477,925.80
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Solution
The fourth proportional to 643,813.80, 965,720.70 and 477,925.80 is: 716,888.70
Step by Step Solution
- Step 1: Write the proportion equation
643,813.80 : 965,720.70 = 477,925.80 : x - Step 2: Convert to fraction form
643,813.80/965,720.70 = 477,925.80/x - Step 3: Cross multiply
643,813.80x = 965,720.70 × 477,925.80 - Step 4: Simplify right side
643,813.80x = 461,542,838,124.06 - Step 5: Solve for x
x = 461,542,838,124.06/643,813.80 - Step 6: Final answer
x = 716,888.70
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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.