Finding the Fourth Proportional to 812,206.15, 1,120,492.56 and 489,737.10
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Solution
The fourth proportional to 812,206.15, 1,120,492.56 and 489,737.10 is: 675,625.00
Step by Step Solution
- Step 1: Write the proportion equation
812,206.15 : 1,120,492.56 = 489,737.10 : x - Step 2: Convert to fraction form
812,206.15/1,120,492.56 = 489,737.10/x - Step 3: Cross multiply
812,206.15x = 1,120,492.56 × 489,737.10 - Step 4: Simplify right side
812,206.15x = 548,746,776,905.98 - Step 5: Solve for x
x = 548,746,776,905.98/812,206.15 - Step 6: Final answer
x = 675,625.00
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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.