Finding the Fourth Proportional to 778,965.75, 1,074,975.99 and 421,269.75
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Solution
The fourth proportional to 778,965.75, 1,074,975.99 and 421,269.75 is: 581,354.02
Step by Step Solution
- Step 1: Write the proportion equation
778,965.75 : 1,074,975.99 = 421,269.75 : x - Step 2: Convert to fraction form
778,965.75/1,074,975.99 = 421,269.75/x - Step 3: Cross multiply
778,965.75x = 1,074,975.99 × 421,269.75 - Step 4: Simplify right side
778,965.75x = 452,854,866,563.30 - Step 5: Solve for x
x = 452,854,866,563.30/778,965.75 - Step 6: Final answer
x = 581,354.02
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.