Finding the Fourth Proportional to 812,963.45, 1,121,437.58 and 640,245.13
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Solution
The fourth proportional to 812,963.45, 1,121,437.58 and 640,245.13 is: 883,182.31
Step by Step Solution
- Step 1: Write the proportion equation
812,963.45 : 1,121,437.58 = 640,245.13 : x - Step 2: Convert to fraction form
812,963.45/1,121,437.58 = 640,245.13/x - Step 3: Cross multiply
812,963.45x = 1,121,437.58 × 640,245.13 - Step 4: Simplify right side
812,963.45x = 717,994,943,189.17 - Step 5: Solve for x
x = 717,994,943,189.17/812,963.45 - Step 6: Final answer
x = 883,182.31
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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.