Finding the Fourth Proportional to 498,487.59, 687,909.38 and 272,133.09
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Solution
The fourth proportional to 498,487.59, 687,909.38 and 272,133.09 is: 375,541.75
Step by Step Solution
- Step 1: Write the proportion equation
498,487.59 : 687,909.38 = 272,133.09 : x - Step 2: Convert to fraction form
498,487.59/687,909.38 = 272,133.09/x - Step 3: Cross multiply
498,487.59x = 687,909.38 × 272,133.09 - Step 4: Simplify right side
498,487.59x = 187,202,903,858.72 - Step 5: Solve for x
x = 187,202,903,858.72/498,487.59 - Step 6: Final answer
x = 375,541.75
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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.