Finding the Fourth Proportional to 812,890.69, 1,121,852.36 and 450,348.05
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Solution
The fourth proportional to 812,890.69, 1,121,852.36 and 450,348.05 is: 621,515.33
Step by Step Solution
- Step 1: Write the proportion equation
812,890.69 : 1,121,852.36 = 450,348.05 : x - Step 2: Convert to fraction form
812,890.69/1,121,852.36 = 450,348.05/x - Step 3: Cross multiply
812,890.69x = 1,121,852.36 × 450,348.05 - Step 4: Simplify right side
812,890.69x = 505,224,026,644.40 - Step 5: Solve for x
x = 505,224,026,644.40/812,890.69 - Step 6: Final answer
x = 621,515.33
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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.