Finding the Fourth Proportional to 420,642.84, 580,484.12 and 229,656.23
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Solution
The fourth proportional to 420,642.84, 580,484.12 and 229,656.23 is: 316,923.95
Step by Step Solution
- Step 1: Write the proportion equation
420,642.84 : 580,484.12 = 229,656.23 : x - Step 2: Convert to fraction form
420,642.84/580,484.12 = 229,656.23/x - Step 3: Cross multiply
420,642.84x = 580,484.12 × 229,656.23 - Step 4: Simplify right side
420,642.84x = 133,311,790,523.37 - Step 5: Solve for x
x = 133,311,790,523.37/420,642.84 - Step 6: Final answer
x = 316,923.95
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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.