Finding the Fourth Proportional to 7,640,422.41, 10,558,904.67 and 6,261,591.81
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Solution
The fourth proportional to 7,640,422.41, 10,558,904.67 and 6,261,591.81 is: 8,653,389.49
Step by Step Solution
- Step 1: Write the proportion equation
7,640,422.41 : 10,558,904.67 = 6,261,591.81 : x - Step 2: Convert to fraction form
7,640,422.41/10,558,904.67 = 6,261,591.81/x - Step 3: Cross multiply
7,640,422.41x = 10,558,904.67 × 6,261,591.81 - Step 4: Simplify right side
7,640,422.41x = 66,115,551,004,242.75 - Step 5: Solve for x
x = 66,115,551,004,242.75/7,640,422.41 - Step 6: Final answer
x = 8,653,389.49
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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.