Finding the Fourth Proportional to 643,812.20, 965,718.30 and 583,677.80
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Solution
The fourth proportional to 643,812.20, 965,718.30 and 583,677.80 is: 875,516.70
Step by Step Solution
- Step 1: Write the proportion equation
643,812.20 : 965,718.30 = 583,677.80 : x - Step 2: Convert to fraction form
643,812.20/965,718.30 = 583,677.80/x - Step 3: Cross multiply
643,812.20x = 965,718.30 × 583,677.80 - Step 4: Simplify right side
643,812.20x = 563,668,332,763.74 - Step 5: Solve for x
x = 563,668,332,763.74/643,812.20 - Step 6: Final answer
x = 875,516.70
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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.