Finding the Fourth Proportional to 413,813.70, 620,720.55 and 413,813.70
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Solution
The fourth proportional to 413,813.70, 620,720.55 and 413,813.70 is: 620,720.55
Step by Step Solution
- Step 1: Write the proportion equation
413,813.70 : 620,720.55 = 413,813.70 : x - Step 2: Convert to fraction form
413,813.70/620,720.55 = 413,813.70/x - Step 3: Cross multiply
413,813.70x = 620,720.55 × 413,813.70 - Step 4: Simplify right side
413,813.70x = 256,862,667,461.54 - Step 5: Solve for x
x = 256,862,667,461.54/413,813.70 - Step 6: Final answer
x = 620,720.55
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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.