Finding the Fourth Proportional to 696,039,863.76, 960,560,265.84 and 398,739,564.96
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Solution
The fourth proportional to 696,039,863.76, 960,560,265.84 and 398,739,564.96 is: 550,275,066.79
Step by Step Solution
- Step 1: Write the proportion equation
696,039,863.76 : 960,560,265.84 = 398,739,564.96 : x - Step 2: Convert to fraction form
696,039,863.76/960,560,265.84 = 398,739,564.96/x - Step 3: Cross multiply
696,039,863.76x = 960,560,265.84 × 398,739,564.96 - Step 4: Simplify right side
696,039,863.76x = 383,013,382,518,903,552 - Step 5: Solve for x
x = 383,013,382,518,903,552/696,039,863.76 - Step 6: Final answer
x = 550,275,066.79
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1.5x scale
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.