Finding the Fourth Proportional to 505,342.80, 697,432.68 and 290,491.92
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Solution
The fourth proportional to 505,342.80, 697,432.68 and 290,491.92 is: 400,913.12
Step by Step Solution
- Step 1: Write the proportion equation
505,342.80 : 697,432.68 = 290,491.92 : x - Step 2: Convert to fraction form
505,342.80/697,432.68 = 290,491.92/x - Step 3: Cross multiply
505,342.80x = 697,432.68 × 290,491.92 - Step 4: Simplify right side
505,342.80x = 202,598,558,283.95 - Step 5: Solve for x
x = 202,598,558,283.95/505,342.80 - Step 6: Final answer
x = 400,913.12
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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.