Finding the Fourth Proportional to 621,403.36, 931,458.66 and 421,739.98
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Solution
The fourth proportional to 621,403.36, 931,458.66 and 421,739.98 is: 632,171.28
Step by Step Solution
- Step 1: Write the proportion equation
621,403.36 : 931,458.66 = 421,739.98 : x - Step 2: Convert to fraction form
621,403.36/931,458.66 = 421,739.98/x - Step 3: Cross multiply
621,403.36x = 931,458.66 × 421,739.98 - Step 4: Simplify right side
621,403.36x = 392,833,356,639.23 - Step 5: Solve for x
x = 392,833,356,639.23/621,403.36 - Step 6: Final answer
x = 632,171.28
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.