Finding the Fourth Proportional to 789,153.12, 1,089,393.57 and 462,420.63
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Solution
The fourth proportional to 789,153.12, 1,089,393.57 and 462,420.63 is: 638,352.75
Step by Step Solution
- Step 1: Write the proportion equation
789,153.12 : 1,089,393.57 = 462,420.63 : x - Step 2: Convert to fraction form
789,153.12/1,089,393.57 = 462,420.63/x - Step 3: Cross multiply
789,153.12x = 1,089,393.57 × 462,420.63 - Step 4: Simplify right side
789,153.12x = 503,758,060,957.35 - Step 5: Solve for x
x = 503,758,060,957.35/789,153.12 - Step 6: Final answer
x = 638,352.75
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1.5x scale
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.