Finding the Fourth Proportional to 729,679.19, 1,089,728.11 and 621,914.76
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Solution
The fourth proportional to 729,679.19, 1,089,728.11 and 621,914.76 is: 928,788.99
Step by Step Solution
- Step 1: Write the proportion equation
729,679.19 : 1,089,728.11 = 621,914.76 : x - Step 2: Convert to fraction form
729,679.19/1,089,728.11 = 621,914.76/x - Step 3: Cross multiply
729,679.19x = 1,089,728.11 × 621,914.76 - Step 4: Simplify right side
729,679.19x = 677,717,995,024.16 - Step 5: Solve for x
x = 677,717,995,024.16/729,679.19 - Step 6: Final answer
x = 928,788.99
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.