Finding the Fourth Proportional to 420,499.05, 581,047.76 and 299,430.15
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Solution
The fourth proportional to 420,499.05, 581,047.76 and 299,430.15 is: 413,754.12
Step by Step Solution
- Step 1: Write the proportion equation
420,499.05 : 581,047.76 = 299,430.15 : x - Step 2: Convert to fraction form
420,499.05/581,047.76 = 299,430.15/x - Step 3: Cross multiply
420,499.05x = 581,047.76 × 299,430.15 - Step 4: Simplify right side
420,499.05x = 173,983,217,559.68 - Step 5: Solve for x
x = 173,983,217,559.68/420,499.05 - Step 6: Final answer
x = 413,754.12
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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.