Finding the Fourth Proportional to 639,390.93, 882,357.78 and 352,909.05
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Solution
The fourth proportional to 639,390.93, 882,357.78 and 352,909.05 is: 487,013.55
Step by Step Solution
- Step 1: Write the proportion equation
639,390.93 : 882,357.78 = 352,909.05 : x - Step 2: Convert to fraction form
639,390.93/882,357.78 = 352,909.05/x - Step 3: Cross multiply
639,390.93x = 882,357.78 × 352,909.05 - Step 4: Simplify right side
639,390.93x = 311,392,045,899.91 - Step 5: Solve for x
x = 311,392,045,899.91/639,390.93 - Step 6: Final answer
x = 487,013.55
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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.