Finding the Fourth Proportional to 472,560,147.30, 708,840,220.95 and 407,936,921.70
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Solution
The fourth proportional to 472,560,147.30, 708,840,220.95 and 407,936,921.70 is: 611,905,382.55
Step by Step Solution
- Step 1: Write the proportion equation
472,560,147.30 : 708,840,220.95 = 407,936,921.70 : x - Step 2: Convert to fraction form
472,560,147.30/708,840,220.95 = 407,936,921.70/x - Step 3: Cross multiply
472,560,147.30x = 708,840,220.95 × 407,936,921.70 - Step 4: Simplify right side
472,560,147.30x = 289,162,097,711,490,880 - Step 5: Solve for x
x = 289,162,097,711,490,880/472,560,147.30 - Step 6: Final answer
x = 611,905,382.55
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1.5x scale
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.