Finding the Fourth Proportional to 771,393.21, 1,064,169.14 and 499,548.71
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Solution
The fourth proportional to 771,393.21, 1,064,169.14 and 499,548.71 is: 689,148.29
Step by Step Solution
- Step 1: Write the proportion equation
771,393.21 : 1,064,169.14 = 499,548.71 : x - Step 2: Convert to fraction form
771,393.21/1,064,169.14 = 499,548.71/x - Step 3: Cross multiply
771,393.21x = 1,064,169.14 × 499,548.71 - Step 4: Simplify right side
771,393.21x = 531,604,313,290.22 - Step 5: Solve for x
x = 531,604,313,290.22/771,393.21 - Step 6: Final answer
x = 689,148.29
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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.