Finding the Fourth Proportional to 811,432.26, 1,217,259.12 and 338,006.91
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Solution
The fourth proportional to 811,432.26, 1,217,259.12 and 338,006.91 is: 507,056.49
Step by Step Solution
- Step 1: Write the proportion equation
811,432.26 : 1,217,259.12 = 338,006.91 : x - Step 2: Convert to fraction form
811,432.26/1,217,259.12 = 338,006.91/x - Step 3: Cross multiply
811,432.26x = 1,217,259.12 × 338,006.91 - Step 4: Simplify right side
811,432.26x = 411,441,993,820.52 - Step 5: Solve for x
x = 411,441,993,820.52/811,432.26 - Step 6: Final answer
x = 507,056.49
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1.5x scale
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.