Finding the Fourth Proportional to 724,908.48, 1,000,395.36 and 438,480.96
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Solution
The fourth proportional to 724,908.48, 1,000,395.36 and 438,480.96 is: 605,116.82
Step by Step Solution
- Step 1: Write the proportion equation
724,908.48 : 1,000,395.36 = 438,480.96 : x - Step 2: Convert to fraction form
724,908.48/1,000,395.36 = 438,480.96/x - Step 3: Cross multiply
724,908.48x = 1,000,395.36 × 438,480.96 - Step 4: Simplify right side
724,908.48x = 438,654,317,832.35 - Step 5: Solve for x
x = 438,654,317,832.35/724,908.48 - Step 6: Final answer
x = 605,116.82
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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.