Finding the Fourth Proportional to 505,772.36, 697,979.94 and 279,432.44
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Solution
The fourth proportional to 505,772.36, 697,979.94 and 279,432.44 is: 385,624.55
Step by Step Solution
- Step 1: Write the proportion equation
505,772.36 : 697,979.94 = 279,432.44 : x - Step 2: Convert to fraction form
505,772.36/697,979.94 = 279,432.44/x - Step 3: Cross multiply
505,772.36x = 697,979.94 × 279,432.44 - Step 4: Simplify right side
505,772.36x = 195,038,237,705.25 - Step 5: Solve for x
x = 195,038,237,705.25/505,772.36 - Step 6: Final answer
x = 385,624.55
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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.