Finding the Fourth Proportional to 521,898.70, 720,208.02 and 307,052.62
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Solution
The fourth proportional to 521,898.70, 720,208.02 and 307,052.62 is: 423,725.45
Step by Step Solution
- Step 1: Write the proportion equation
521,898.70 : 720,208.02 = 307,052.62 : x - Step 2: Convert to fraction form
521,898.70/720,208.02 = 307,052.62/x - Step 3: Cross multiply
521,898.70x = 720,208.02 × 307,052.62 - Step 4: Simplify right side
521,898.70x = 221,141,759,486.01 - Step 5: Solve for x
x = 221,141,759,486.01/521,898.70 - Step 6: Final answer
x = 423,725.45
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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.