Finding the Fourth Proportional to 513,139.74, 707,671.26 and 331,660.86
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Solution
The fourth proportional to 513,139.74, 707,671.26 and 331,660.86 is: 457,393.65
Step by Step Solution
- Step 1: Write the proportion equation
513,139.74 : 707,671.26 = 331,660.86 : x - Step 2: Convert to fraction form
513,139.74/707,671.26 = 331,660.86/x - Step 3: Cross multiply
513,139.74x = 707,671.26 × 331,660.86 - Step 4: Simplify right side
513,139.74x = 234,706,858,688.88 - Step 5: Solve for x
x = 234,706,858,688.88/513,139.74 - Step 6: Final answer
x = 457,393.65
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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.