Finding the Fourth Proportional to 743,830.20, 1,115,118.36 and 322,788.96
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Solution
The fourth proportional to 743,830.20, 1,115,118.36 and 322,788.96 is: 483,911.38
Step by Step Solution
- Step 1: Write the proportion equation
743,830.20 : 1,115,118.36 = 322,788.96 : x - Step 2: Convert to fraction form
743,830.20/1,115,118.36 = 322,788.96/x - Step 3: Cross multiply
743,830.20x = 1,115,118.36 × 322,788.96 - Step 4: Simplify right side
743,830.20x = 359,947,895,701.31 - Step 5: Solve for x
x = 359,947,895,701.31/743,830.20 - Step 6: Final answer
x = 483,911.38
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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.