Finding the Fourth Proportional to 660,697.79, 911,747.66 and 385,038.09
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Solution
The fourth proportional to 660,697.79, 911,747.66 and 385,038.09 is: 531,343.65
Step by Step Solution
- Step 1: Write the proportion equation
660,697.79 : 911,747.66 = 385,038.09 : x - Step 2: Convert to fraction form
660,697.79/911,747.66 = 385,038.09/x - Step 3: Cross multiply
660,697.79x = 911,747.66 × 385,038.09 - Step 4: Simplify right side
660,697.79x = 351,057,575,643.18 - Step 5: Solve for x
x = 351,057,575,643.18/660,697.79 - Step 6: Final answer
x = 531,343.65
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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.