Finding the Fourth Proportional to 643,876.08, 888,508.44 and 357,379.44
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Solution
The fourth proportional to 643,876.08, 888,508.44 and 357,379.44 is: 493,161.12
Step by Step Solution
- Step 1: Write the proportion equation
643,876.08 : 888,508.44 = 357,379.44 : x - Step 2: Convert to fraction form
643,876.08/888,508.44 = 357,379.44/x - Step 3: Cross multiply
643,876.08x = 888,508.44 × 357,379.44 - Step 4: Simplify right side
643,876.08x = 317,534,648,722.47 - Step 5: Solve for x
x = 317,534,648,722.47/643,876.08 - Step 6: Final answer
x = 493,161.12
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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.