Finding the Fourth Proportional to 502,854.09, 693,963.56 and 311,928.99
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Solution
The fourth proportional to 502,854.09, 693,963.56 and 311,928.99 is: 430,477.46
Step by Step Solution
- Step 1: Write the proportion equation
502,854.09 : 693,963.56 = 311,928.99 : x - Step 2: Convert to fraction form
502,854.09/693,963.56 = 311,928.99/x - Step 3: Cross multiply
502,854.09x = 693,963.56 × 311,928.99 - Step 4: Simplify right side
502,854.09x = 216,467,352,367.60 - Step 5: Solve for x
x = 216,467,352,367.60/502,854.09 - Step 6: Final answer
x = 430,477.46
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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.