Finding the Fourth Proportional to 639,426.81, 882,409.05 and 352,946.97
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Solution
The fourth proportional to 639,426.81, 882,409.05 and 352,946.97 is: 487,066.85
Step by Step Solution
- Step 1: Write the proportion equation
639,426.81 : 882,409.05 = 352,946.97 : x - Step 2: Convert to fraction form
639,426.81/882,409.05 = 352,946.97/x - Step 3: Cross multiply
639,426.81x = 882,409.05 × 352,946.97 - Step 4: Simplify right side
639,426.81x = 311,443,600,498.08 - Step 5: Solve for x
x = 311,443,600,498.08/639,426.81 - Step 6: Final answer
x = 487,066.85
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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.