Finding the Fourth Proportional to 920,401.99, 1,270,142.63 and 506,930.83
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Solution
The fourth proportional to 920,401.99, 1,270,142.63 and 506,930.83 is: 699,557.87
Step by Step Solution
- Step 1: Write the proportion equation
920,401.99 : 1,270,142.63 = 506,930.83 : x - Step 2: Convert to fraction form
920,401.99/1,270,142.63 = 506,930.83/x - Step 3: Cross multiply
920,401.99x = 1,270,142.63 × 506,930.83 - Step 4: Simplify right side
920,401.99x = 643,874,457,644.28 - Step 5: Solve for x
x = 643,874,457,644.28/920,401.99 - Step 6: Final answer
x = 699,557.87
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1.5x scale
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.