Finding the Fourth Proportional to 432,479.70, 648,136.35 and 289,919.70
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Solution
The fourth proportional to 432,479.70, 648,136.35 and 289,919.70 is: 434,488.59
Step by Step Solution
- Step 1: Write the proportion equation
432,479.70 : 648,136.35 = 289,919.70 : x - Step 2: Convert to fraction form
432,479.70/648,136.35 = 289,919.70/x - Step 3: Cross multiply
432,479.70x = 648,136.35 × 289,919.70 - Step 4: Simplify right side
432,479.70x = 187,907,496,151.10 - Step 5: Solve for x
x = 187,907,496,151.10/432,479.70 - Step 6: Final answer
x = 434,488.59
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.