Finding the Fourth Proportional to 645,620.20, 968,430.30 and 393,677.80
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Solution
The fourth proportional to 645,620.20, 968,430.30 and 393,677.80 is: 590,516.70
Step by Step Solution
- Step 1: Write the proportion equation
645,620.20 : 968,430.30 = 393,677.80 : x - Step 2: Convert to fraction form
645,620.20/968,430.30 = 393,677.80/x - Step 3: Cross multiply
645,620.20x = 968,430.30 × 393,677.80 - Step 4: Simplify right side
645,620.20x = 381,249,509,957.34 - Step 5: Solve for x
x = 381,249,509,957.34/645,620.20 - Step 6: Final answer
x = 590,516.70
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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.