Finding the Fourth Proportional to 513,931.84, 709,245.30 and 287,578.96
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Solution
The fourth proportional to 513,931.84, 709,245.30 and 287,578.96 is: 396,869.80
Step by Step Solution
- Step 1: Write the proportion equation
513,931.84 : 709,245.30 = 287,578.96 : x - Step 2: Convert to fraction form
513,931.84/709,245.30 = 287,578.96/x - Step 3: Cross multiply
513,931.84x = 709,245.30 × 287,578.96 - Step 4: Simplify right side
513,931.84x = 203,964,025,758.89 - Step 5: Solve for x
x = 203,964,025,758.89/513,931.84 - Step 6: Final answer
x = 396,869.80
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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.