Finding the Fourth Proportional to 939,408.36, 1,407,340.98 and 728,012.94
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Solution
The fourth proportional to 939,408.36, 1,407,340.98 and 728,012.94 is: 1,090,646.50
Step by Step Solution
- Step 1: Write the proportion equation
939,408.36 : 1,407,340.98 = 728,012.94 : x - Step 2: Convert to fraction form
939,408.36/1,407,340.98 = 728,012.94/x - Step 3: Cross multiply
939,408.36x = 1,407,340.98 × 728,012.94 - Step 4: Simplify right side
939,408.36x = 1,024,562,444,432.28 - Step 5: Solve for x
x = 1,024,562,444,432.28/939,408.36 - Step 6: Final answer
x = 1,090,646.50
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.