Finding the Fourth Proportional to 811,903.70, 1,217,855.55 and 788,575.70
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Solution
The fourth proportional to 811,903.70, 1,217,855.55 and 788,575.70 is: 1,182,863.55
Step by Step Solution
- Step 1: Write the proportion equation
811,903.70 : 1,217,855.55 = 788,575.70 : x - Step 2: Convert to fraction form
811,903.70/1,217,855.55 = 788,575.70/x - Step 3: Cross multiply
811,903.70x = 1,217,855.55 × 788,575.70 - Step 4: Simplify right side
811,903.70x = 960,371,292,840.14 - Step 5: Solve for x
x = 960,371,292,840.14/811,903.70 - Step 6: Final answer
x = 1,182,863.55
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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.