Finding the Fourth Proportional to 778,124.84, 1,073,812.28 and 420,428.84
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Solution
The fourth proportional to 778,124.84, 1,073,812.28 and 420,428.84 is: 580,191.79
Step by Step Solution
- Step 1: Write the proportion equation
778,124.84 : 1,073,812.28 = 420,428.84 : x - Step 2: Convert to fraction form
778,124.84/1,073,812.28 = 420,428.84/x - Step 3: Cross multiply
778,124.84x = 1,073,812.28 × 420,428.84 - Step 4: Simplify right side
778,124.84x = 451,461,643,786.95 - Step 5: Solve for x
x = 451,461,643,786.95/778,124.84 - Step 6: Final answer
x = 580,191.79
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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.