Finding the Fourth Proportional to 621,813.70, 932,720.55 and 486,511.30
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Solution
The fourth proportional to 621,813.70, 932,720.55 and 486,511.30 is: 729,766.95
Step by Step Solution
- Step 1: Write the proportion equation
621,813.70 : 932,720.55 = 486,511.30 : x - Step 2: Convert to fraction form
621,813.70/932,720.55 = 486,511.30/x - Step 3: Cross multiply
621,813.70x = 932,720.55 × 486,511.30 - Step 4: Simplify right side
621,813.70x = 453,779,087,317.22 - Step 5: Solve for x
x = 453,779,087,317.22/621,813.70 - Step 6: Final answer
x = 729,766.95
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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.